update README

CONTRIBUTING.md

@@ -87,7 +87,7 @@ npm run build
 
 ### 提交流程
 
-1. Fork 本仓库；
+1. Fork 本仓库并签出到 `main` 分支；
 2. 在提交 PR 之前，请先发起 Issue 讨论你想要做的修改；
 3. 为你的修改创建一个新的分支；
 4. 请为你的修改添加相应的测试；

CONTRIBUTING_EN.md

@@ -87,7 +87,7 @@ Before opening a Pull Request, please open an issue to discuss the change and ge
 
 ### Pull Request Process
 
-1. Fork the repository.
+1. Fork the repository, and then checkout `main` branch.
 2. Before you draft a PR, please open an issue to discuss the changes you want to make.
 3. Create a new branch for your changes.
 4. Please add tests for your changes accordingly.

README.md

@@ -19,7 +19,7 @@
 > [!WARNING]
 > 当前分支为 `next`，是 v0.4.x 的开发分支，目前还没有稳定，请勿在生产环境中使用。
 >
-> 如需访问之前的版本，请切换至 `main` 分支。
+> 如需访问之前的版本，或提交 PR，请切换至 `main` 分支。
 
 ---
 

README_EN.md

@@ -19,7 +19,7 @@
 > [!WARNING]
 > The current branch is `next`, which is the development branch for v0.4.x. It is currently unstable and should not be used in production environments.
 >
-> To access the previous versions, please switch to the `main` branch.
+> To access the previous versions or open Pull Requests, please switch to the `main` branch.
 
 ---