Merge pull request #522 from slashstar/master

Update CONTRIBUTING.md

CONTRIBUTING.md

@@ -12,7 +12,7 @@ Hello! Thank you for choosing to help contribute to one of the SendGrid open sou
 - [Code Reviews](#code-reviews)
 
 <a name="roadmap"></a>
-We use [Milestones](https://github.com/sendgrid/sendgrid-python/milestones) to help define current roadmaps, please feel free to grab an issue from the current milestone. Please indicate that you have begun work on it to avoid collisions. Once a PR is made, community review, comments, suggestions and additional PRs are welcomed and encouraged.
+We use [Milestones](https://github.com/sendgrid/sendgrid-python/milestones) to help define current roadmaps, please feel free to grab an issue from the current milestone. Please indicate that you have begun work on it to avoid collisions. Once a PR is made, community reviews, comments, suggestions and additional PRs are welcomed and encouraged.
 
 <a name="cla"></a>
 ## CLAs and CCLAs