chore: point docsV4Source at nostics-errors preview branch

Author: posva

content.config.ts

@@ -11,7 +11,7 @@ const docsV3Source = {
 const docsV4Source = {
   cwd: process.env.NUXT_V4_PATH ?? undefined,
   // TODO: revert to 4.x branch before merging
-  repository: !process.env.NUXT_V4_PATH ? 'https://github.com/nuxt/nuxt/tree/error-context' : undefined,
+  repository: !process.env.NUXT_V4_PATH ? 'https://github.com/nuxt/nuxt/tree/nostics-errors' : undefined,
   include: 'docs/**/*',
   exclude: ['docs/**/*.json'],
   prefix: '/docs/4.x'