Fix MarkDown custom heading IDs not rendering

Author: eXpl0it3r

astro.config.mjs

@@ -1,4 +1,5 @@
 import { defineConfig } from 'astro/config';
+import remarkHeadingId from 'remark-heading-id';
 import sitemap from '@astrojs/sitemap';
 import starlight from '@astrojs/starlight';
 
@@ -8,6 +9,9 @@ import starlight from '@astrojs/starlight';
 export default defineConfig({
   site: 'https://docs.firegiant.com',
   trailingSlash: "always",
+  markdown: {
+    remarkPlugins: [remarkHeadingId],
+  },
   integrations: [
     sitemap({
       filter: (page) => !page.startsWith('https://docs.firegiant.com/wix3/')

package.json

@@ -13,6 +13,7 @@
     "@astrojs/starlight": "0.31.1",
     "astro": "5.3.0",
     "astro-broken-link-checker": "github:firegiant/astro-broken-link-checker",
+    "remark-heading-id": "1.0.1",
     "sharp": "0.33.5"
   },
   "devDependencies": {