Update asdf instructions and add to zh version (#1305)

README.md

@@ -146,7 +146,7 @@ pip install --user pdm
 With [asdf-vm](https://asdf-vm.com/)
 
 ```bash
-asdf plugin add github.com/1oglop1/asdf-pdm.git
+asdf plugin add pdm
 asdf install pdm latest
 ```
 

README_zh.md

@@ -138,6 +138,13 @@ pipx install pdm
 pip install --user pdm
 ```
 
+[asdf-vm](https://asdf-vm.com/)
+
+```bash
+asdf plugin add pdm
+asdf install pdm latest
+```
+
 ## 快速上手
 
 **初始化一个新的 PDM 项目**