add Outreachy December 2021, improve consistency, update formatting

Author: TimidRobot

content/programs/history/contents.lr

@@ -12,56 +12,83 @@ body:
 Creative Commons (CC) participated in Google Season of Docs (GSoD) for the
 first time in 2020.
 
-- [Successful 2020 Season of Docs technical writing projects](https://developers.google.com/season-of-docs/docs/2020/participants)
+- *[All GSoD Open Source Blog posts](/blog/categories/gsod/)*
+- [Successful 2020 Season of Docs technical writing
+  projects](https://developers.google.com/season-of-docs/docs/2020/participants)
   - [Open Source Blog posts](/blog/categories/gsod-2020/)
-  - [Introducing Our Google Season of Docs 2020 Participants](https://creativecommons.org/2020/08/20/google-season-of-docs-2020/)
-
-
-### Relevant links
-
-- [Open Source Blog posts](/blog/categories/gsod/)
+  - [Introducing Our Google Season of Docs 2020
+    Participants](https://creativecommons.org/2020/08/20/google-season-of-docs-2020/)
 
 
 ## Google Summer of Code
 
 CC has participated in Google Summer of Code (GSoC) nine times since 2006:
 
 - *[All GSoC Open Source Blog posts](/blog/categories/gsoc/)*
-- [Google Summer of Code 2020](https://summerofcode.withgoogle.com/archive/2020/organizations/5450793232105472/)
+- [Google Summer of Code
+  2020](https://summerofcode.withgoogle.com/archive/2020/organizations/5450793232105472/)
   - [Open Source Blog posts](/blog/categories/gsoc-2020/)
-  - [Welcome Our Interns from Google Summer of Code and Outreachy!](https://creativecommons.org/2020/05/11/welcome-interns-google-summer-of-code-and-outreachy/)
-  - [The Improved CC Search](https://creativecommons.org/2020/12/15/the-improved-cc-search/)
-  - [Important Updates to the Creative Commons Catalog](https://creativecommons.org/2020/11/02/updates-to-the-creative-commons-catalog/)
-  - [New Improvements in the CC Search Browser Extension](https://creativecommons.org/2020/12/07/new-improvements-in-the-cc-search-browser-extension/)
-  - [The Linked Commons 2.0: What’s New?](https://creativecommons.org/2020/11/04/the-linked-commons-2-0-whats-new/)
-- [Google Summer of Code 2019](https://summerofcode.withgoogle.com/archive/2019/organizations/5500455663173632/)
+  - [Welcome Our Interns from Google Summer of Code and
+    Outreachy!](https://creativecommons.org/2020/05/11/welcome-interns-google-summer-of-code-and-outreachy/)
+  - [The Improved CC
+    Search](https://creativecommons.org/2020/12/15/the-improved-cc-search/)
+  - [Important Updates to the Creative Commons
+    Catalog](https://creativecommons.org/2020/11/02/updates-to-the-creative-commons-catalog/)
+  - [New Improvements in the CC Search Browser
+    Extension](https://creativecommons.org/2020/12/07/new-improvements-in-the-cc-search-browser-extension/)
+  - [The Linked Commons 2.0: What’s
+    New?](https://creativecommons.org/2020/11/04/the-linked-commons-2-0-whats-new/)
+- [Google Summer of Code
+  2019](https://summerofcode.withgoogle.com/archive/2019/organizations/5500455663173632/)
   - [Open Source Blog posts](/blog/categories/gsoc-2019/)
-  - [CC + Google Summer of Code 2019](https://creativecommons.org/2019/03/04/cc-google-summer-of-code-2019/)
-  - [Meet CC’s 2019 Google Summer of Code students](https://creativecommons.org/2019/05/30/meet-ccs-2019-google-summer-of-code-students/)
-  - [Introducing the Updated Creative Commons WordPress Plugin](https://creativecommons.org/2019/11/22/updated-cc-wordpress-plugin/)
-  - [Introducing CC Vocabulary, Our New Web Design System](https://creativecommons.org/2019/12/13/cc-vocabulary-web-design-system/)
-  - [Introducing the CC Search Browser Extension](https://creativecommons.org/2020/01/06/cc-search-browser-extension/)
-  - [Introducing the Linked Commons](https://creativecommons.org/2020/01/23/introducing-the-linked-commons/)
-  - [Here’s a Sneak Peek at the Updated Creative Commons Chooser](https://creativecommons.org/2020/01/27/the-new-cc-license-chooser/)
-- [Google Summer of Code 2013](https://www.google-melange.com/archive/gsoc/2013/orgs/cc)
-- [Google Summer of Code 2012](https://www.google-melange.com/archive/gsoc/2012/orgs/cc)
-- [Google Summer of Code 2010](https://www.google-melange.com/archive/gsoc/2010/orgs/creativecommons)
-- [Google Summer of Code 2009](https://www.google-melange.com/archive/gsoc/2009/orgs/cc)
-- [Google Summer of Code 2008](https://developers.google.com/open-source/gsoc/2008/#cc)
-- [Google Summer of Code 2007](https://developers.google.com/open-source/gsoc/2007/#cc)
-- [Google Summer of Code 2006](https://developers.google.com/open-source/gsoc/2006/#cc)
+  - [CC + Google Summer of Code
+    2019](https://creativecommons.org/2019/03/04/cc-google-summer-of-code-2019/)
+  - [Meet CC’s 2019 Google Summer of Code
+    students](https://creativecommons.org/2019/05/30/meet-ccs-2019-google-summer-of-code-students/)
+  - [Introducing the Updated Creative Commons WordPress
+    Plugin](https://creativecommons.org/2019/11/22/updated-cc-wordpress-plugin/)
+  - [Introducing CC Vocabulary, Our New Web Design
+    System](https://creativecommons.org/2019/12/13/cc-vocabulary-web-design-system/)
+  - [Introducing the CC Search Browser
+    Extension](https://creativecommons.org/2020/01/06/cc-search-browser-extension/)
+  - [Introducing the Linked
+    Commons](https://creativecommons.org/2020/01/23/introducing-the-linked-commons/)
+  - [Here’s a Sneak Peek at the Updated Creative Commons
+    Chooser](https://creativecommons.org/2020/01/27/the-new-cc-license-chooser/)
+- [Google Summer of Code
+  2013](https://www.google-melange.com/archive/gsoc/2013/orgs/cc)
+- [Google Summer of Code
+  2012](https://www.google-melange.com/archive/gsoc/2012/orgs/cc)
+- [Google Summer of Code
+  2010](https://www.google-melange.com/archive/gsoc/2010/orgs/creativecommons)
+- [Google Summer of Code
+  2009](https://www.google-melange.com/archive/gsoc/2009/orgs/cc)
+- [Google Summer of Code
+  2008](https://developers.google.com/open-source/gsoc/2008/#cc)
+- [Google Summer of Code
+  2007](https://developers.google.com/open-source/gsoc/2007/#cc)
+- [Google Summer of Code
+  2006](https://developers.google.com/open-source/gsoc/2006/#cc)
 
 
 ## Outreachy
 
-CC participated in Outreachy twice since 2019.
+CC participated in Outreachy three times since 2019:
 
 - *[All Outreachy Open Source Blog posts](/blog/categories/outreachy/)*
-- [Outreachy May 2020 - August 2020](https://www.outreachy.org/outreachy-may-2020-internship-round/)
+- [Outreachy December 2021 internship round -
+  Outreachy](https://www.outreachy.org/outreachy-december-2021-internship-round/)
+- [Outreachy May 2020 - August
+  2020](https://www.outreachy.org/outreachy-may-2020-internship-round/)
   - [Open Source Blog posts](/blog/categories/outreachy-2020/)
-  - [Welcome Our Interns from Google Summer of Code and Outreachy!](https://creativecommons.org/2020/05/11/welcome-interns-google-summer-of-code-and-outreachy/)
-  - [Say Hello to Our New CC Open Source Website!](https://creativecommons.org/2020/11/02/cc-open-source-website/)
-  - [Explore the New CC Legal Database Site!](https://creativecommons.org/2020/12/03/explore-the-new-cc-legal-database-site/)
-- [Outreachy December 2019 - March 2020](https://www.outreachy.org/december-2019-to-march-2020-internship-round/)
+  - [Welcome Our Interns from Google Summer of Code and
+    Outreachy!](https://creativecommons.org/2020/05/11/welcome-interns-google-summer-of-code-and-outreachy/)
+  - [Say Hello to Our New CC Open Source
+    Website!](https://creativecommons.org/2020/11/02/cc-open-source-website/)
+  - [Explore the New CC Legal Database
+    Site!](https://creativecommons.org/2020/12/03/explore-the-new-cc-legal-database-site/)
+- [Outreachy December 2019 - March
+  2020](https://www.outreachy.org/december-2019-to-march-2020-internship-round/)
   - [Open Source Blog posts](/blog/categories/outreachy-2019-20/)
-  - [Meet Our 2020 Interns From Outreachy](https://creativecommons.org/2019/12/10/2020-outreachy-interns/)
+  - [Meet Our 2020 Interns From
+    Outreachy](https://creativecommons.org/2019/12/10/2020-outreachy-interns/)