Update Pull Request Template

.github/pull_request_template.md

@@ -1,7 +1,17 @@
-This is a draft Pull Request Template.
+This is a draft Pull Request Template. Please fill out the neccessary details below
 
-- [ ] Description of what changes have been made (why and how for big features)
-- [ ] Reference [Issue](https://github.com/TUMFARSynchrony/experimental-hub/issues) sovled (if any)
-- [ ] Unit tests + have you tried merging from main?
-- [ ] Terminology consistent with the rest of the codebase?
-- [ ] Who do you think should review?
+# Overview
+TODO: What does this PR contain? Why was the change necessary?
+
+## Changes
+TODO: What was changed? How was the issue solved/feature implemented?
+
+## How to test?
+TODO: How can reviewers test the PR?
+
+# Checklist
+- [ ] Development was merged into this branch and potential conflicts resolved
+- [ ] [Issues](https://github.com/TUMFARSynchrony/experimental-hub/issues) which were solved are referenced
+- [ ] Terminology is consistent with the rest of the codebase
+- [ ] Reviewers are assigned
+- [ ] Optional: Wiki pages were updated to reflect the changes (list changed pages above)