fix(docs): correct favicon url (#2843)

Starlight defaults to favicon.svg, however a favicon.ico was added to the repo.

Changes:

- Format astro config according to Prettier
- Properly set favicon

apps/docs/astro.config.mjs

@@ -1,5 +1,5 @@
-import { defineConfig } from 'astro/config';
-import starlight from '@astrojs/starlight';
+import starlight from '@astrojs/starlight'
+import { defineConfig } from 'astro/config'
 import starlightOpenAPI, { openAPISidebarGroups } from 'starlight-openapi'
 
 // https://astro.build/config
@@ -8,6 +8,7 @@ export default defineConfig({
   integrations: [
     starlight({
       title: 'Modrinth Documentation',
+      favicon: '/favicon.ico',
       editLink: {
         baseUrl: 'https://github.com/modrinth/code/edit/main/apps/docs/',
       },
@@ -36,7 +37,7 @@ export default defineConfig({
             label: 'Modrinth API',
             schema: './public/openapi.yaml',
           },
-        ])
+        ]),
       ],
       sidebar: [
         {
@@ -48,4 +49,4 @@ export default defineConfig({
       ],
     }),
   ],
-});
+})