Update pull_request_template.md

Author: jackzhxng

.github/pull_request_template.md

@@ -1,7 +1,11 @@
 ### Description
+[PLEASE REMOVE] Describe the goal of this PR and any add any relevant context.
 
 ### Test plan
+[PLEASE REMOVE] How did you test this PR? Please write down any manual commands you used and note down tests that you have written.
 
 ### Issue(s) fixed
+[PLEASE REMOVE] List all issues, separate by returns, that this PR addresses.
 
 ### Changelog
+[PLEASE REMOVE] If this PR introduces a fix or feature that should be the upcoming release notes, please add the following line below - `+changelog: <description of feature>`