Grammatical changes to CONTRIBUTING.md

CONTRIBUTING.md

@@ -1,16 +1,15 @@
 # Contribution guidelines 📜
 
-**Thank you for you interest in contributing to the CritiqueBrainz project!** 
+**Thank you for your interest in contributing to CritiqueBrainz!**
 
-Our primary Git repository is located at https://github.com/metabrainz/critiquebrainz. That's where all the changes
+Our primary Git repository is located at https://github.com/metabrainz/critiquebrainz. That's where all changes
 should be submitted.
 
 If you want to submit a bug report or suggest an improvement, please use our [bug tracker](http://tickets.musicbrainz.org/browse/CB).
 Try to provide a good description for the ticket. If it's a bug report, tell us how the issue can be reproduced.
 
-**All MetaBrainz projects have a general contribution guidelines: https://github.com/metabrainz/guidelines.** Make sure
-to take a look at the documents in that repository. Especially, ones that are directly related to the CritiqueBrainz
-project (Python, SQL, etc.).
+**All MetaBrainz projects have a set of general contribution guidelines: https://github.com/metabrainz/guidelines.** Make sure
+to take a look at the documents in that repository, especially ones directly related to CritiqueBrainz (Python, SQL, etc.).
 
 One of the best ways to discuss something with us is by connecting to the [#metabrainz](irc://irc.freenode.net/metabrainz)
 IRC channel on the Freenode network. Other ways to communicate with us are described at https://metabrainz.org/contact.