chore: improve api pr checklist

.github/PULL_REQUEST_TEMPLATE/pull_request_template_api.md

@@ -2,10 +2,12 @@
 
 ### Pre-requisites
 
-- [ ] I have gone through the Contributing guidelines for [Submitting a Pull Request (PR)](../../CONTRIBUTING.md#submitting-a-pull-request-pr) and ensured that this is not a duplicate PR.
-- [ ] I have performed preliminary testing using the [test suite](../../apps/api/OsmoX.postman_collection.json) to ensure that any existing features are not impacted and any new features are working as expected.
-- [ ] I have updated the required [api docs](../../apps/api/docs/) as applicable.
-- [ ] I have added/updated test cases to the [test suite](../../apps/api/OsmoX.postman_collection.json) as applicable
+- [ ] I have gone through the Contributing guidelines for [Submitting a Pull Request (PR)](https://github.com/OsmosysSoftware/osmo-x/blob/main/CONTRIBUTING.md#-submitting-a-pull-request-pr) and ensured that this is not a duplicate PR.
+- [ ] I have performed unit testing for the new feature added or updated to ensure the new features added are working as expected.
+- [ ] I have added/updated test cases to the [test suite](https://github.com/OsmosysSoftware/osmo-x/blob/main/apps/api/OsmoX.postman_collection.json) as applicable.
+- [ ] I have performed preliminary testing using the [test suite](https://github.com/OsmosysSoftware/osmo-x/blob/main/apps/api/OsmoX.postman_collection.json) to ensure that any existing features are not impacted and any new features are working as expected as a whole.
+- [ ] I have added/updated the required [api docs](https://github.com/OsmosysSoftware/osmo-x/tree/main/apps/api/docs) as applicable.
+- [ ] I have added/updated the `.env.example` file with the required values as applicable.
 
 ### PR Details
 
@@ -17,7 +19,7 @@ PR details have been updated as per the given format (see below)
 - [ ] Screenshots have been added (optional)
 - [ ] Query request and response examples have been added (as applicable, in case added or updated)
 - [ ] Documentation changes have been listed (as applicable)
-- [ ] Test suite output is added (as applicable)
+- [ ] Test suite/unit testing output is added (as applicable)
 - [ ] Pending actions have been added (optional)
 - [ ] Any other additional notes have been added (optional)
 
@@ -26,6 +28,8 @@ PR details have been updated as per the given format (see below)
 - [ ] Appropriate label(s) have been added (`ready for review` should be added if the PR is ready to be reviewed)
 - [ ] Assignee(s) and reviewer(s) have been added (optional)
 
+_Note: Reviewer should ensure that the checklist and description have been populated and followed correctly, and the PR should be merged only after resolving all conversations and verifying that CI checks pass._
+
 ---
 
 **Description:**
@@ -48,9 +52,9 @@ Add any screenshots as required.
 
 - Add a list of changes made to the API documents with brief descriptions.
 
-**Test suite output:**
+**Test suite/unit testing output:**
 
-- Add the output of the status of different test cases in the testing suite.
+- Add the output of the status of different test cases in the testing suite or unit testing performed.
 
 **Pending actions:**