[pr-template] 修正PR模板的链接路径错误

Author: mysterywolf

.gitee/PULL_REQUEST_TEMPLATE.en.md

@@ -27,4 +27,4 @@ As part of this pull request, I've considered the following:
 - [ ] All modifications to BSP are justified and do not affect other components or BSPs.
 - [ ] I've commented appropriately where code is tricky.
 - [ ] Code in this PR is of high quality.
-- [ ] This PR complies with [RT-Thread code specification](../documentation/contribution_guide/coding_style_en.txt)
+- [ ] This PR complies with [RT-Thread code specification](https://gitee.com/rtthread/rt-thread/blob/master/documentation/contribution_guide/coding_style_en.md)

.gitee/PULL_REQUEST_TEMPLATE.zh-CN.md

@@ -27,4 +27,4 @@
 - [ ] 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
 - [ ] 对难懂代码均提供对应的注释
 - [ ] 本拉取/合并请求代码是高质量的
-- [ ] 本拉取/合并符合[RT-Thread代码规范](../documentation/contribution_guide/coding_style_cn.md)
+- [ ] 本拉取/合并符合[RT-Thread代码规范](https://gitee.com/rtthread/rt-thread/blob/master/documentation/contribution_guide/coding_style_cn.md)

.github/PULL_REQUEST_TEMPLATE.md

@@ -31,4 +31,4 @@ The following content must not be changed in the submitted PR message. Otherwise
 - [ ] 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 All modifications are justified and not affect other components or BSP
 - [ ] 对难懂代码均提供对应的注释 I've commented appropriately where code is tricky
 - [ ] 本拉取/合并请求代码是高质量的 Code in this PR is of high quality
-- [ ] 本拉取/合并使用[formatting](https://github.com/mysterywolf/formatting)等源码格式化工具确保格式符合[RT-Thread代码规范](../documentation/contribution_guide/coding_style_cn.md) This PR complies with [RT-Thread code specification](../documentation/contribution_guide/coding_style_en.txt) 
+- [ ] 本拉取/合并使用[formatting](https://github.com/mysterywolf/formatting)等源码格式化工具确保格式符合[RT-Thread代码规范](https://github.com/RT-Thread/rt-thread/blob/master/documentation/contribution_guide/coding_style_cn.md) This PR complies with [RT-Thread code specification](https://github.com/RT-Thread/rt-thread/blob/master/documentation/contribution_guide/coding_style_en.md)