Tweak wording

"Assure" isn't quite the right word here. Probably meant "ensure"... tweaked the wording a little.

.github/PULL_REQUEST_TEMPLATE.md

@@ -2,10 +2,10 @@
 
 ##### Contributor checklist
 
-- [ ] Provided the tests for the changes.
-- [ ] Assure PR title is short, clear, and good to be included in the user-oriented changelog
+- [ ] Included tests for the changes.
+- [ ] PR title is short, clear, and ready to be included in the user-facing changelog.
 
 ##### Maintainer checklist
 
-- [ ] Assure one of these labels is present: `backwards incompatible`, `feature`, `enhancement`, `deprecation`, `bug`, `dependency`, `docs` or `skip-changelog` as they determine changelog listing.
+- [ ] Verified one of these labels is present: `backwards incompatible`, `feature`, `enhancement`, `deprecation`, `bug`, `dependency`, `docs` or `skip-changelog` as they determine changelog listing.
 - [ ] Assign the PR to an existing or new milestone for the target version (following [Semantic Versioning](https://blog.versioneye.com/2014/01/16/semantic-versioning/)).