chore: add documentation PR checklist (OpenApiDocs) [no_release]

Author: lachiebol

pull_request_template.md

@@ -23,4 +23,5 @@
 - [✔/✖/NA] New test case added/updated?
 - [✔/✖/NA] Are all newly added texts included via translation?
 - [✔/✖/NA] Are text sanitized properly? (Eg use of v-text v/s v-html for vue)
-- [✔/✖/NA] Version bumped?
+- [✔/✖/NA] Version bumped?
+- [✔/✖/NA] Documentation updated?