docs: update PR template (#1103)

.github/pull_request_template.md

@@ -1,20 +1,21 @@
 ### Prepare
 
-- [ ] Read contribution guidelines
-- [ ] Read license information
+- [ ] Read [PR guidelines](https://github.com/JanssenProject/jans/blob/main/docs/CONTRIBUTING.md#prs)
+- [ ] Read [license information](https://github.com/JanssenProject/jans/blob/main/LICENSE)
 
 -------------------
 
 ### Description
 
-- Target issue #
-  <!-- Link this PR to issue it is fixing -->
+#### Target issue
+  <!-- Link or describe the issue this PR is fixing -->
 
-- Implementation Details
-  <!-- If the fix is involved one then communicate high level analysis and implementation approach -->
+#### Implementation Details
+  <!-- If the fix is an involved one then communicate high level analysis and implementation approach -->
 
 -------------------
-### Document the changes
-
+### Test and Document the changes
+- [ ] Static code analysis has been run locally and issues have been fixed
+- [ ] Relevant unit and integration tests have been added/updated
 - [ ] Relevant documentation has been updated if any (i.e. user guides, installation and configuration guides, technical design docs etc)