Enhanced PR template with a professional formatting confirmation checkbox

Author: Suhaniahirwar20

.github/pull_request_template.md

@@ -36,5 +36,7 @@ Thanks for submitting a pull request! Please provide enough information so that
 # Checklist
 
 Please ensure the following tasks are completed before submitting this pull request.
-
-- [ ] Read, understood, and followed the [contributing guidelines](https://github.com/json-schema-org/website/blob/main/CONTRIBUTING.md).
+- [ ] I have reviewed my code for formatting and consistency.
+- [ ] Read, understood, and followed the [contributing guidelines](https://github.com/json-schema-org/website/blob/main/CONTRIBUTING.md).
+- [ ] I have tested my changes to ensure they work as expected.
+- [ ] I have documented all relevant changes and updates as required.