note to contributors about docs during pr flow (#49)

Author: softprops

.github/PULL_REQUEST_TEMPLATE.md

@@ -3,4 +3,7 @@
 *Description of changes:*
 
 
-By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
+By submitting this pull request
+
+- [ ] I confirm that my contribution is made under the terms of the Apache 2.0 license.
+- [ ] I confirm that I've made a best effort attempt to update all relevant documentation.