update pr template (#148)

Signed-off-by: chensuyue <suyue.chen@intel.com>

.github/pull_request_template.md

@@ -1,15 +1,23 @@
-## Type of Change
-
-feature or bug fix or documentation or validation or others
-
 ## Description
 
-detail description
+The summary of the proposed changes as long as the relevant motivation and context.
 
-## How has this PR been tested?
+## Issues
 
-how to reproduce the test (including hardware information)
+List the issue or RFC link this PR is working on. If there is no such link, please mark it as `n/a`.
 
-## Dependency Change?
+## Type of change
 
-any library dependency introduced or removed
+List the type of change like below. Please delete options that are not relevant.
+
+- [ ] Bug fix (non-breaking change which fixes an issue)
+- [ ] New feature (non-breaking change which adds new functionality)
+- [ ] Breaking change (fix or feature that would break existing design and interface)
+
+## Dependencies
+
+List the newly introduced 3rd party dependency if exists.
+
+## Tests
+
+Describe the tests that you ran to verify your changes.