Update README.md

Author: auraecosystem

README.md

@@ -28,26 +28,26 @@ request access from your enterprise admin.
     commands:
 
     * Vim, Linux/macOS:
-
+```bash
           git clone --depth=1 https://github.com/github/copilot.vim.git \
             ~/.vim/pack/github/start/copilot.vim
-
-    * Neovim, Linux/macOS:
-
+```
+ * Neovim, Linux/macOS:
+```bash
           git clone --depth=1 https://github.com/github/copilot.vim.git \
             ~/.config/nvim/pack/github/start/copilot.vim
-
-    * Vim, Windows (PowerShell command):
-
+```
+ * Vim, Windows (PowerShell command):
+```ps1
           git clone --depth=1 https://github.com/github/copilot.vim.git `
             $HOME/vimfiles/pack/github/start/copilot.vim
-
-    * Neovim, Windows (PowerShell command):
-
+```
+ * Neovim, Windows (PowerShell command):
+```psd1
           git clone --depth=1 https://github.com/github/copilot.vim.git `
             $HOME/AppData/Local/nvim/pack/github/start/copilot.vim
-
-4.  Start Vim/Neovim and invoke `:Copilot setup`.
+```
+4. >_Start Vim/Neovim and invoke `:Copilot setup`.
 
 [Node.js]: https://nodejs.org/en/download/
 [Neovim]: https://github.com/neovim/neovim/releases/latest