fix bad encoding on contributing to RoR page

railties/guides/source/contributing_to_ruby_on_rails.textile

@@ -361,7 +361,7 @@ $ git push mine master
 
 h4. Issue a Pull Request
 
-Navigate to the Rails repository you just pushed to (e.g. https://github.com/<your user name>/rails) and press "Pull Request" in the upper right hand corner.
+Navigate to the Rails repository you just pushed to (e.g. https://github.com/<your user name>/rails) and press "Pull Request" in the upper right hand corner.
   
 Ensure the changesets you introduced are included in the "Commits" tab and that the "Files Changed" incorporate all of your changes.