[docs-infra] Test HTML validation in broken links checker

docs/scripts/reportBrokenLinks.mts

@@ -39,6 +39,15 @@ async function main() {
       '[id^="demo-"] a[href^="#outlined-buttons"]',
       '[id^="demo-"] a[href^="#foo"]',
     ],
+    htmlValidate: {
+      extends: ['mui:recommended'],
+      rules: {
+        // Prism.js outputs raw ">" in syntax-highlighted code blocks.
+        // https://github.com/PrismJS/prism/issues/2516
+        // https://gitlab.com/html-validate/html-validate/-/work_items/348
+        'no-raw-characters': 'off',
+      },
+    },
     ignores: [
       {
         // The links checker uses standard github slugger to check if the anchor exists. But the MUI docs use

package.json

@@ -97,7 +97,7 @@
     "@mui-internal/api-docs-builder-core": "workspace:^",
     "@mui/internal-babel-plugin-minify-errors": "2.0.8-canary.24",
     "@mui/internal-bundle-size-checker": "1.0.9-canary.69",
-    "@mui/internal-code-infra": "0.0.4-canary.11",
+    "@mui/internal-code-infra": "https://pkg.pr.new/mui/mui-public/@mui/internal-code-infra@e53ab4c",
     "@mui/internal-docs-utils": "workspace:^",
     "@mui/internal-netlify-cache": "0.0.3-canary.2",
     "@mui/internal-scripts": "workspace:^",