PULL_REQUEST_TEMPLATE.md

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<!-- Demo: https://github.com/PaddlePaddle/Paddle/pull/24810 -->

### PR Category
<!-- One of [ User Experience | Execute Infrastructure | Operator Mechanism | CINN | Custom Device | Performance Optimization | Distributed Strategy | Parameter Server | Communication Library | Auto Parallel | Inference | Environment Adaptation ] -->


### PR Types
<!-- One of [ New features | Bug fixes | Improvements | Performance | BC Breaking | Deprecations | Docs | Devs | Not User Facing | Security | Others ] -->


### Description
<!-- Describe what you’ve done -->


### 是否引起精度变化
<!-- one of the following [ 是 | 否 ]-->