Change pr template

.github/PULL_REQUEST_TEMPLATE.md

-### PR Description
+**What type of PR is this?**
 
-***What kind of change does this PR introduce?*** (Bug fix, feature, docs update, ...)
+**What this PR does / why we need it**:
 
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-***What is the current behavior?*** (You can also link to an open issue here)
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-***What is the new behavior?*** (if this is a feature change))
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-***Does this PR introduce a breaking change?*** (What changes might users need to make in their application due to this PR?)
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-***Other information***:
+**Which issue(s) this PR fixes**:
+<!--
+Usage: `Fixes #<issue number>`, or "Fixes (paste link of issue)"
+-->
+Fixes #
+ 
+**Special notes for your reviewer**:
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