Update README.md

Author: TakumiBC

README.md

@@ -48,7 +48,7 @@ Terms](https://docs.github.com/en/site-policy/github-terms/github-terms-for-addi
           git clone https://github.com/github/copilot.vim.git `
             $HOME/AppData/Local/nvim/pack/github/start/copilot.vim
 
-4.  Start Neovim and invoke `:Copilot setup`.
+4.  Start Neovim or Vim and invoke `:Copilot setup`.
 
 [Node.js]: https://nodejs.org/en/download/
 [Neovim]: https://github.com/neovim/neovim/releases/latest