docs: Update CHANGELOG

Author: vain0x

CHANGELOG.md

@@ -1,14 +1,25 @@
-### 1.21 (2022-09-05)
+# CHANGELOG
+
+The versions >= 1.21 are fork.
 
-This version is a fork by vain0x.
+### Unreleased
 
-* Add definition provider for javascript files
-* Refresh internal cache on save css files
+* Upgraded dependencies
+
+### 1.21 (2022-09-05)
+
+* Added the definition provider for JavaScript files
+* Added the feature to refresh internal cache on save css files
 * Merged PRs:
     * [Use activationevents to prevent launching the ext on unrelated workspaces by jens1o · Pull Request #124](https://github.com/zignd/HTML-CSS-Class-Completion/pull/124)
     * [Allow escaped characters in css selectors by canvasplay · Pull Request #289](https://github.com/zignd/HTML-CSS-Class-Completion/pull/289)
     * [Add curly bracket to JS provider for use in React. by bilherron · Pull Request #371](https://github.com/zignd/HTML-CSS-Class-Completion/pull/371)
-* Update packages
+* Upgraded dependencies
+
+----
+----
+
+## Pre-fork Versions
 
 ### 1.20 (Dec 19, 2020)
 * Settings to allow users to specify which language modes will have autocompletion;