SubmittingPatches: reword awkward phrasing

Signed-off-by: Linus Arver <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: Linus Arver

Documentation/SubmittingPatches

@@ -3,8 +3,8 @@ Submitting Patches
 
 == Guidelines
 
-Here are some guidelines for people who want to contribute their code to this
-software. There is also a link:MyFirstContribution.html[step-by-step tutorial]
+Here are some guidelines for contributing back to this
+project. There is also a link:MyFirstContribution.html[step-by-step tutorial]
 available which covers many of these same guidelines.
 
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