docs: update install commands

remove unnecessary flag, update comments

README.md

@@ -39,9 +39,9 @@ purpose programming language with modern web technologies to design a graphical
 - Install the module
 
  ```sh
- # From source
- v install --git https://github.com/ttytm/webview
- # Or as vpm package
+ # Into `<vmodules_dir>/webview`
+ v install https://github.com/ttytm/webview
+ # OR as vpm module under a namespace `<vmodules_dir>/ttytm/webview`
  v install ttytm.webview
  ```