Linkifyed the Edit entry

This way it is easer to scan for the main .md file

README.md

@@ -11,7 +11,7 @@ Moved to GitHub for collaborative updating and for the site mentioned above.
 It's [easy](https://github.com/vhf/free-programming-books/wiki/Contribution). Please read [CONTRIBUTING](/CONTRIBUTING.md).
 - [Fork](https://help.github.com/articles/fork-a-repo)
 - Read the [TODO](/TODO.md) file(Adding new books is our #1 priority, but things like Alphabetizing are important, too.)
-- Edit (we prefer multiple small commits rather than one large change)
+- [Edit](https://github.com/vhf/free-programming-books/edit/master/free-programming-books.md) (we prefer multiple small commits rather than one large change)
 - [Send a PR](https://help.github.com/articles/using-pull-requests)
 - be part of a project that over 24,000 people starred in 7 months. ;)