Update CONTRIBUTING.rst

Author: stevenbw

CONTRIBUTING.rst

@@ -93,13 +93,13 @@ Ready to contribute? Here's how to set up `pyswarms` for local development.
     $ git commit -m "Your detailed description of your changes."
     $ git push origin name-of-your-bugfix-or-feature
 
-   Commit messages should adhere to the following [commit message guidelines]. In brief, commit messages should follow these conventions:
+   In brief, commit messages should follow these conventions:
        
    * Always contain a subject line which briefly describes the changes made. For example "Update CONTRIBUTING.rst".
    * Subject lines should not exceed 50 characters.
    * The commit body should contain context about the change - how the code worked before, how it works now and why you decided to solve the issue in the way you did.
 
-   [commit message guidelines]: https://chris.beams.io/posts/git-commit/
+   More detail on commit guidelines can be found at https://chris.beams.io/posts/git-commit
 
 7. Submit a pull request through the GitHub website.