HARMONY-2028: Update PR template for consistency.

Author: chris-durbin

.github/pull_request_template.md

@@ -11,4 +11,4 @@
 * [ ] Acceptance criteria met
 * [ ] Tests added/updated (if needed) and passing
 * [ ] Documentation updated (if needed)
-* [ ] Harmony in a Box tested? (if changes made to microservices or new dependencies added)
+* [ ] Harmony in a Box tested (if changes made to microservices or new dependencies added)