docs: update README

Author: Letícia

README.md

@@ -2,7 +2,7 @@
 
 A Vite plugin to polyfill Node's Core Modules for browser environments. Supports [`node:` protocol imports](https://nodejs.org/dist/latest-v16.x/docs/api/esm.html#node-imports).
 
-### Why do I need this?
+## Why do I need this?
 
 ```
 Module "stream" has been externalized for browser compatibility. Cannot access "stream.Readable" in client code.
@@ -56,45 +56,46 @@ export default defineConfig({
 
 ### All polyfills
 
-    'assert',
-    'buffer',
-    'child_process',
-    'cluster',
-    'console',
-    'constants',
-    'crypto',
-    'dgram',
-    'dns',
-    'domain',
-    'events',
-    'fs',
-    'http',
-    'https',
-    'http2',
-    'module',
-    'net',
-    'os',
-    'path',
-    'punycode',
-    'process',
-    'querystring',
-    'readline',
-    'repl',
-    'stream',
-    '_stream_duplex',
-    '_stream_passthrough',
-    '_stream_readable',
-    '_stream_transform',
-    '_stream_writable',
-    'string_decoder',
-    'sys',
-    'timers/promises',
-    'timers',
-    'tls',
-    'tty',
-    'url',
-    'util',
-    'vm',
-    'zlib',
-
-    plus the node:[lib] if protocolImports is true
+  - If protocolImports is true, also adds node:[module]
+```js
+  'assert',
+  'buffer',
+  'child_process',
+  'cluster',
+  'console',
+  'constants',
+  'crypto',
+  'dgram',
+  'dns',
+  'domain',
+  'events',
+  'fs',
+  'http',
+  'https',
+  'http2',
+  'module',
+  'net',
+  'os',
+  'path',
+  'punycode',
+  'process',
+  'querystring',
+  'readline',
+  'repl',
+  'stream',
+  '_stream_duplex',
+  '_stream_passthrough',
+  '_stream_readable',
+  '_stream_transform',
+  '_stream_writable',
+  'string_decoder',
+  'sys',
+  'timers/promises',
+  'timers',
+  'tls',
+  'tty',
+  'url',
+  'util',
+  'vm',
+  'zlib',
+```