Add PULL_REQUEST_TEMPLATE.md

 file

.github/CONTRIBUTING.md

@@ -1,3 +1,5 @@
+[简体中文](https://stdf.design/#/guide/contribution?lang=zh_CN)
+
 ## Introduction
 
 Thank you for using STDF.

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,3 @@
+Before submitting a pull request, please read the [contributing guide](https://stdf.design/#/guide/contribution).
+
+在提交 pull request 之前，请阅读 [贡献指南](https://stdf.design/#/guide/contribution)。