Revert "website/docs: Prepare for monorepo. (#14119)" (#14239)

This reverts commit 5bdef1c4f6.

website/src/components/SupportBadge.tsx

@@ -1,5 +1,8 @@
-import { SupportLevelToLabel, isSupportLevel } from "@site/remark/support-directive.mjs";
 import React from "react";
+import {
+    isSupportLevel,
+    SupportLevelToLabel,
+} from "@site/remark/support-directive";
 
 export interface SupportBadgeProps {
     level: string;