docs: update the pull request template

.github/pull_request_template.md

@@ -8,5 +8,7 @@
   - This repository enables `Require signed commits`, so all commits must be signed
 - [ ] [Avoid force push](https://github.com/suzuki-shunsuke/oss-contribution-guide?tab=readme-ov-file#dont-do-force-pushes-after-opening-pull-requests)
 - [ ] Do only one thing in one Pull Request
+- [ ] [Execute cmdx s to scaffold code](https://aquaproj.github.io/docs/products/aqua-registry/contributing/#use-cmdx-s-definitely)
+- [ ] Install and execute the package and confirm if the package works well
 
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