changelog is not an rst

Author: Archmonger

.github/pull_request_template.md

@@ -7,5 +7,5 @@ A summary of the changes.
 Please update this checklist as you complete each item:
 
 -   [ ] Tests have been included for all bug fixes or added functionality.
--   [ ] The `changelog.rst` has been updated with any significant changes, if necessary.
+-   [ ] The changelog has been updated with any significant changes, if necessary.
 -   [ ] GitHub Issues which may be closed by this PR have been linked.