chore: update PR template to not use tasklist (#404)

Author: xeniape

.github/pull_request_template.md

@@ -10,25 +10,22 @@
 - Not all of these items are applicable to all PRs, the author should update this template to only leave the boxes in that are relevant
 - Please make sure all these things are done and tick the boxes
 
-```[tasklist]
-# Author
+### Author
+
 - [ ] Changes are OpenShift compatible
 - [ ] CRD changes approved
 - [ ] Helm chart can be installed and deployed operator works
 - [ ] Integration tests passed (for non trivial changes)
-```
 
-```[tasklist]
-# Reviewer
+### Reviewer
+
 - [ ] Code contains useful comments
 - [ ] (Integration-)Test cases added
 - [ ] Documentation added or updated
 - [ ] Changelog updated
 - [ ] Cargo.toml only contains references to git tags (not specific commits or branches)
-```
 
-```[tasklist]
-# Acceptance
+### Acceptance
+
 - [ ] Feature Tracker has been updated
 - [ ] Proper release label has been added
-```