Remove reference comment from "Check License" workflow

Although very useful information, it doesn't apply directly to the licensee commands being run in this workflow step, and
thus might be confusing.

Author: per1234

Diff for: .github/workflows/check-license.yml

@@ -43,7 +43,6 @@ jobs:
       - name: Install licensee
         run: gem install licensee
 
-      # See: https://docs.github.com/en/free-pro-team@latest/github/creating-cloning-and-archiving-repositories/licensing-a-repository
       - name: Check license file
         run: |
           EXIT_STATUS=0