📝 put description in PR template into comment (#15513)

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,3 +1,4 @@
+<!--
 First of all, thank you for your contribution! 😄
 
 New feature please send pull request to feature branch, and rest to master branch.
@@ -5,7 +6,7 @@ Pull request will be merged after one of collaborators approve.
 Please makes sure that these form are filled before submitting your pull request, thank you!
 
 [[中文版模板 / Chinese template](https://github.com/ant-design/ant-design/blob/master/.github/PULL_REQUEST_TEMPLATE/pr_cn.md)]
-
+-->
 ### 🤔 This is a ...
 
 - [ ] New feature

.github/PULL_REQUEST_TEMPLATE/pr_cn.md

@@ -1,3 +1,4 @@
+<!--
 首先，感谢你的贡献！😄
 
 新特性请提交至 feature 分支，其余可提交至 master 分支。
@@ -5,7 +6,7 @@
 请确保填写以下 pull request 的信息，谢谢！~
 
 [[English Template / 英文模板](?expand=1)]
-
+-->
 ### 🤔 这个变动的性质是？
 
 - [ ] 新特性提交