chore: Apply pull request template

.github/pull_request_template.md

@@ -1,31 +1,10 @@
-<!--- Provide a general summary of your changes in the Title above -->
+<!--- Using the headings below is optional, do whatever makes sense to you. -->
 
 ## Description
-<!--- Describe your changes in detail -->
+<!--- Describe your changes in detail. -->
 
 ## Motivation and Context
 <!--- Why is this change required? What problem does it solve? -->
 <!--- If it fixes an open issue, please link to the issue here using the syntax: 'Closes #123' -->
 
-## How to prove the effect of this PR?
-<!--- Please describe in detail how verify the change you have done. -->
-<!--- In the context of a bug fix, this should include how to reproduce the bug. -->
-<!--- In the context of a feature, this should include how to demonstrate the feature. -->
-<!--- In the event of a pure code refactoring, just ignore this section -->
-
-## Additional info
-<!--- Ignore if not relevant -->
-<!--- For example screenshots -->
-
-## Is this a breaking change?
-<!--- Does the change require the user to change something on their side? -->
-
-- [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
-
-## Checklist
-<!--- Go over all the following points, and put an `x` in all the boxes that apply. -->
-<!--- If you're unsure about any of these, don't hesitate to ask. We're here to help! -->
-
-- [ ] My change requires a change to the documentation, and I have updated the documentation accordingly.
-
 <!-- markdownlint-disable-file MD041 -->