Update pull_request_template.md

.github/pull_request_template.md

@@ -1,3 +1,19 @@
-### Which [issue](../issues) does this PR address?
+### Issue Number
+<!-- Which issue does this PR address? E.g. "Resolves #123" -->
+* Resolves #
 
-Resolves #
+### Purpose
+<!-- What is the purpose of this PR? Why is it needed? -->
+* 
+
+### Technical Details
+<!-- Are there any key aspects of the implementation to highlight? -->
+* 
+
+### Testing Instructions
+<!-- How can the reviewer verify the functionality or fix introduced by this PR? Please provide steps. -->
+* 
+
+### Screenshots
+<!-- If this PR affects the UI, please include before/after screenshots demonstrating the change(s). -->
+*