Add links to help wanted issues and good first issues back.

Author: kgodey

content/contributing-code/contents.lr

@@ -23,6 +23,8 @@ You may also create GitHub issues for any other missing infrastructure such as a
 We track all our work via the GitHub issues associated with a repository and that's where you can find things to work on. First, check the labels on the issue you're interested in:  
 * Issues labeled **"in progress"** are generally not available, but may be available if there has been no activity on the issue or related PR for over a week.
 * Issues labeled **"help wanted"** or **"good first issue"** have been identified as available for community contribution. 
+    * Here's a list of [all issues labeled "good first issue"](https://github.com/search?q=org%3Acreativecommons+is%3Aissue+is%3Aopen+label%3A%22good+first+issue%22)
+    * Here's a list of [all issues labeled "help wanted"](https://github.com/search?q=org%3Acreativecommons+is%3Aissue+is%3Aopen+label%3A%22help+wanted%22)
 * If the issue does not have either of those labels, it may still be open for contribution.
 
 Once you have identified an issue you'd like to work on, follow these steps: