fix(README): use a consistent coding style in packer example

Author: NTBBloodbath

README.md

@@ -53,23 +53,23 @@ have to leave Neovim!
 
 ```lua
 use {
-    'NTBBloodbath/rest.nvim',
-    requires = { 'nvim-lua/plenary.nvim' },
-    config = function()
-      require("rest-nvim").setup({
-        -- Open request results in a horizontal split
-        result_split_horizontal = false,
-        -- Skip SSL verification, useful for unknown certificates
-        skip_ssl_verification = false,
-        -- Highlight request on run
-        highlight = {
-            enabled = true,
-            timeout = 150,
-        },
-        -- Jump to request line on run
-        jump_to_request = false,
-        })
-    end
+  "NTBBloodbath/rest.nvim",
+  requires = { "nvim-lua/plenary.nvim" },
+  config = function()
+    require("rest-nvim").setup({
+      -- Open request results in a horizontal split
+      result_split_horizontal = false,
+      -- Skip SSL verification, useful for unknown certificates
+      skip_ssl_verification = false,
+      -- Highlight request on run
+      highlight = {
+        enabled = true,
+        timeout = 150,
+      },
+      -- Jump to request line on run
+      jump_to_request = false,
+    })
+  end
 }
 ```