docs: clean up pr template

- remove redundant why section
- simplify changes made section

Author: bniladridas

.github/pull_request_template.md

@@ -12,20 +12,15 @@ Explain what was causing the bug.
 ### Changes Made
 - Change 1 → change type
 - Change 2 → change type
-- Change 3 → change type
+
+<!-- Examples:
+- Tools menu options are now implemented → behavior change
+- Fixed non-functional menu actions → bug fix
+- Updated proc-macro2 dependency → build change
+-->
 
 ### Testing
 - [ ] Tested with OpenAI
 - [ ] Tested with Sambanova
 - [ ] Tested with Gemini
 - [ ] Added unit tests (if applicable)
-
-## Why (brief):
-- Brief description of changes → change type
-- Another change description → change type
-
-<!-- Examples:
-- Tools menu options are now implemented and functional → behavior change
-- Previously non-functional menu actions are fixed → bug fix
-- Updated proc-macro2 dependency → build / dependency change
--->