docs: add example fixing Nuxt error page rendering

Related:
nitrojs/nitro#1007
nuxt/nuxt#27269

Author: davidstackio

README.md

@@ -73,6 +73,10 @@ import { useCompression } from 'h3-compression'
 
 export default defineNitroPlugin((nitro) => {
   nitro.hooks.hook('render:response', async (response, { event }) => {
+    // Skip internal nuxt routes (e.g. error page)
+    if (getRequestURL(event).pathname.startsWith('/__nuxt'))
+      return
+
     if (!response.headers?.['content-type']?.startsWith('text/html'))
       return