Github has a simple web interface that makes it very easy to propose a simple change to code. You do not need to install any software or do anything beside register for a git hub account.
- Identify a change you want to make.
- Find the file you want to modify on Github
- Click Edit to open the file
- Make your change
- Scroll down and click the Propose file change button (add a note if you want).
- Fill in any additional information in the pull request including a reference to the joomlacode issue.
- Click Send pull request.
- Make a note in the joomlacode issue with any a link to the pull request.