Merge pull request #2146 from RT-Thread/update_pr_template

Update PR template.

.github/PULL_REQUEST_TEMPLATE.md

-### Summary of this Pull Request (PR) 拉取请求的简述  
+### Summary of this Pull Request (PR) 拉取/合并请求的简述  
 
-**Add description here.**  
+**Add description here.** **请在这里加入描述**
 
-### Intent for your PR 拉取请求的目的  
+### Intent for your PR 拉取/合并请求的目的  
 
 Choose one (Mandatory): 必须选择一项  
 
-- [ ] This PR is for a code-review and is intended to get feedback 本拉取请求是一个草稿版本  
-- [ ] This PR is mature, and ready to be integrated into the repo 本拉取请求是一个成熟版本  
+- [ ] This PR is for a code-review and is intended to get feedback 本拉取/合并请求是一个草稿版本  
+- [ ] This PR is mature, and ready to be integrated into the repo 本拉取/合并请求是一个成熟版本  
 
 ### Reviewers (Mandatory): 代码审阅者（必须指定）
-(@<github.com username(s)> Ex: @user1, @user2)  
 
+(@<github.com username(s)> Ex: @user1, @user2)  
 
 ### Code Quality： 代码质量  
+
 As part of this pull request, I've considered the following:  
-我在这个拉取请求中考虑了：
-- [ ] Style guide is adhered to, including spacing, naming and other style 代码的格式正确  
-- [ ] All redundant code is removed and cleaned up 没有垃圾代码
-- [ ] All modifications are justified 所有变更均有原因  
-- [ ] I've commented appropriately where code is tricky 难懂代码均被注释  
-- [ ] Code in this PR is of high quality 本拉取请求高质量  
+我在这个拉取/合并请求中已经考虑了：
+
+- [ ] Already check the difference between PR and old code 已经仔细查看过代码改动的对比
+- [ ] Style guide is adhered to, including spacing, naming and other style 代码风格正确，包括缩进空格，命名及其他风格
+- [ ] All redundant code is removed and cleaned up 没有垃圾代码，代码尽量精简，不包含`#if 0`代码，不包含已经被注释了的代码
+- [ ] All modifications are justified and not affect other components or BSP 所有变更均有原因及合理的，并且不会影响到其他软件组件代码或BSP
+- [ ] I've commented appropriately where code is tricky 对难懂代码均提供对应的注释
+- [ ] Code in this PR is of high quality 本拉取/合并请求代码是高质量的
 
 ### Testing：代码测试
 
 I've tested the code using the following test programs (provide list here):  
-我已经在如下用例上跑过测试：  
+我已经在如下场合跑过对应的测试：  
 
 - [ ] application 1
 - [ ] application 2