docs: update README

README.md

@@ -1,25 +1,25 @@
 # open-github-url.nvim
 
-**open-github-url.nvim** is a Neovim plugin to open the abbreviated GitHub repository URL under the cursor in your browser.
+**open-github-url.nvim** is a Neovim plugin to open the abbreviated GitHub
+repository URL under the cursor in your browser.
 
 ## Installation
 
-Using [vim-plug](https://github.com/junegunn/vim-plug)
-
-```viml
-Plug 'tetzng/open-github-url.nvim'
-```
-
-Using [dein](https://github.com/Shougo/dein.vim)
-
-```viml
-call dein#add('tetzng/open-github-url.nvim')
-```
-
-Using [packer.nvim](https://github.com/wbthomason/packer.nvim)
+[lazy.nvim](https://github.com/folke/lazy.nvim)
 
 ```lua
-use 'tetzng/open-github-url.nvim'
+{
+  "tetzng/open-github-url.nvim",
+
+  -- recommended
+  keys = {
+    {
+      "<leader>gh",
+      "<cmd>OpenGitHubUrlUnderCursor<cr>",
+      desc = "Open GitHub URL under cursor",
+    },
+  },
+}
 ```
 
 ## Features
@@ -41,11 +41,3 @@ This command prints the repository path detected under the cursor.
 Open a specific URL:
 `:OpenUrl https://github.com/user/repo`
 This command opens the given URL in the default web browser.
-
-## Setup
-
-To set up the plugin, simply call its `setup()` function, typically in your `init.lua` configuration file:
-```lua
-require('open-github-url').setup()
-```
-This will create the user commands described in the usage section.