Merge pull request #1403 from shymega/fix/template/pull-request-template-clarify

Clarify PR template with regards to user-visible changes

Author: shymega

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,3 +1,4 @@
 ## Contributor Checklist:
 
-* [ ] I have created a file in the `doc/newsfragments` directory (and read the `README.md` in that directory)
+* [ ] I have created a file in the `doc/newsfragments` directory *IF* it is a
+      user-visible change (and make sure to read the `README.md` in that directory)