chores: update PR template

Author: chenxin-yan

.github/pull_request_template.md

@@ -1,11 +1,12 @@
-**📌 What’s Changed**
+**📌 What's Changed**
 
-- [a list of things that changed. mention any related tickets]
+<!-- a list of things that changed. mention any related tickets -->
 
 **✅ Actions**
 
-- [ ] [a todo list to keep track of the states of this PR]
+<!-- a todo list to keep track of the states of this PR -->
+- [ ] 
 
 **📝 Notes for Reviewer**
 
-- [things that you want reviewers to focus on or any questions you have]
+<!-- things that you want reviewers to focus on or any questions you have -->