Merge pull request #11563 from adbridge/master

Simplify pull request template

Author: 0xc0170

.github/pull_request_template.md

@@ -1,13 +1,20 @@
-### Description
+<!--
+For more information on the requirements for pull requests, please see [the contributing guidelines](https://os.mbed.com/docs/mbed-os/latest/contributing/workflow.html#pull-request-types).
+-->
+### Description (*required*)
 
 <!--
     Required
     Add here detailed changes summary, testing results, dependencies
     Good example: https://os.mbed.com/docs/mbed-os/latest/contributing/workflow.html (Pull request template)
 -->
+##### Summary of change (*What the change is for and why*)
 
 
-### Pull request type
+##### Documentation (*Details of any document updates required*)
+
+----------------------------------------------------------------------------------------------------------------
+### Pull request type (*required*)
 
 <!--
     Required
@@ -16,25 +23,44 @@
     of them would change the meaning incorrectly. The only changes to be made are to add a description text under the
     description heading and to add a 'x' to the correct box.
 -->
-    [ ] Fix
-    [ ] Refactor
-    [ ] Target update
-    [ ] Functionality change
-    [ ] Docs update
-    [ ] Test update
-    [ ] Breaking change
+    [] Patch update (Bug fix / Target update / Docs update / Test update / Refactor)
+    [] Feature update (New feature / Functionality change / New API)
+    [] Major update (Breaking change E.g. Return code change / API behaviour change)
+
+----------------------------------------------------------------------------------------------------------------
+### Test results (*required*)
 
-### Reviewers
+<!--
+    Required
+    For example, add test results for new target
+-->
+    [] No Tests required for this change (E.g docs only update)
+    [] Covered by existing mbed-os tests (Greentea or Unittest)
+    [] Tests / results supplied as part of this PR
+    
+    
+----------------------------------------------------------------------------------------------------------------
+### Reviewers (*optional*)
 
 <!--
     Optional
     Request additional reviewers with @username
 -->
 
-### Release Notes
+----------------------------------------------------------------------------------------------------------------
+### Release Notes (*required for feature/major PRs*)
 
 <!--
-    Optional
-    In case of breaking changes, functionality changes or refactors, please add release notes here. 
-    For more information, please see [the contributing guidelines](https://os.mbed.com/docs/mbed-os/latest/contributing/workflow.html#pull-request-types).
+    All 3 sections are compulsory for Major PR types. For Feature PRs only the summary section is required.
+    This section is automatically added to release notes. Please fill in each sub-section with sufficient detail for a user.
+    For more information, please see [the contributing guidelines](https://os.mbed.com/docs/mbed-os/latest/contributing/workflow.html#pull-request-types). 
 -->
+
+##### Summary of changes
+
+##### Impact of changes
+
+##### Migration actions required
+
+
+