add PR template

Author: ethanpalm

.github/pull_request_template.md

@@ -0,0 +1,28 @@
+## Documentation changes
+
+<!-- Brief description of what's being updated -->
+
+Closes <!-- Linear ticket or GitHub issue -->
+
+---
+
+## For Reviewers
+
+When reviewing documentation PRs, please consider:
+
+### ✅ Technical accuracy
+- [ ] Code examples work as written
+- [ ] Commands and configurations are correct
+- [ ] Links resolve to the right destinations
+- [ ] Prerequisites and requirements are accurate
+
+### ✅ Clarity and completeness
+- [ ] Instructions are clear and easy to follow
+- [ ] Steps are in logical order
+- [ ] Nothing important is missing
+- [ ] Examples help illustrate the concepts
+
+### ✅ User experience
+- [ ] A new user could follow these docs successfully
+- [ ] Common gotchas or edge cases are addressed
+- [ ] Error messages or troubleshooting guidance is helpful