feat: auto-link headings

packages/guide/package.json

@@ -72,9 +72,14 @@
 		"eslint": "^8.24.0",
 		"eslint-config-neon": "^0.1.35",
 		"happy-dom": "^7.4.0",
+		"hast-util-to-string": "^2.0.0",
+		"hastscript": "^7.0.2",
+		"html-escaper": "^3.0.3",
 		"prettier": "^2.7.1",
 		"prettier-plugin-astro": "^0.5.5",
 		"prettier-plugin-tailwindcss": "^0.1.13",
+		"rehype-autolink-headings": "^6.1.1",
+		"rehype-slug": "^5.0.1",
 		"typescript": "^4.8.4",
 		"unocss": "^0.45.26",
 		"vercel": "^28.4.8",