Using the Github UI to Make Pull Requests
From Joomla! Documentation
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.===
