github: update PR template

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,24 +1,9 @@
-#### Changes introduced by this PR
-<!--
-    Thank you for your Pull Request. Please provide a description above and fill
-    in as much of the template below as you're able.
--->
+<!-- A clear and concise description of the changes introduced by this pull request. -->
 
-#### Possible drawbacks
-<!--
-    Are there any possible side-effects or negative impacts of the code change?
-    If yes, please, state them.
--->
-
-#### Applicable Issues
-<!--
-    Link any applicable Issues/PRs here. With a brief description explaining
-    why.
--->
+#### References
+<!-- Link any applicable issues/pull requests here, with a brief description explaining why. -->
 
 #### Checklist
 <!-- For completed items, change [ ] to [x]. -->
-
-- [ ] Test scripts passes
 - [ ] Documentation is changed or added (if applicable)
 - [ ] Commit message follows the [commit guidelines](https://dev.bastionbot.org/contributing/pulls/#commit-message-guidelines)