mindspore/.github/PULL_REQUEST_TEMPLATE.md

<!--  Thanks for sending a pull request!  Here are some tips for you:

1) If this is your first time, please read our contributor guidelines: https://github.com/mindspore-ai/mindspore/blob/master/CONTRIBUTING.md

2) If you want to contribute your code but don't know who will review and merge, please add label `mindspore-assistant` to the pull request, we will find and do it as soon as possible.
-->

**What type of PR is this?**
> Uncomment only one ` /kind <>` line, hit enter to put that in a new line, and remove leading whitespaces from that line:
>
> `/kind bug`</br>
> `/kind task`</br>
> `/kind feature`</br>

**What does this PR do / why do we need it**:


**Which issue(s) this PR fixes**:
<!-- 
*Automatically closes linked issue when PR is merged.
Usage: `Fixes #<issue number>`, or `Fixes (paste link of issue)`.
-->
Fixes #

**Special notes for your reviewers**: