correct typo user submitted

Author: brianamarie

responses/06.3_successful-open.md

@@ -1,6 +1,6 @@
 Release branches are long lived, and we opened a pull request for another feature change. This will give our release a more detailed history. We changed the default text to green instead of white.
 
-Several changes might included in release branches. This is a common practice, and allows you to continue to ship code quickly without blockers.
+Several changes might be included in release branches. This is a common practice, and allows you to continue to ship code quickly without blockers.
 
 <hr>
 <h3 align="center">Head over to the <a href="{{ url }}">next pull request</a> for your next steps.</h3>