Auto-convert tables to first col header (#35533)

lib/render-content/create-processor.js

@@ -44,6 +44,12 @@ export default function createProcessor(context) {
     })
     .use(raw)
     .use(wrapInElement, { selector: 'ol > li img', wrapper: 'span.procedural-image-wrapper' })
+    .use(wrapInElement, {
+      selector: '.rowheaders tbody tr td:first-child',
+      wrapper: 'th',
+      // This moves what it finds in the selector inside the wrapper.
+      rewrite: true,
+    })
     .use(rewriteImgSources)
     .use(rewriteAssetImgTags)
     .use(rewriteLocalLinks, context)