Add /warnings/version-mismatch (#6909)

Author: rickhanlonii

vercel.json

@@ -159,6 +159,11 @@
       "destination": "https://legacy.reactjs.org/blog/2020/09/22/introducing-the-new-jsx-transform.html",
       "permanent": false
     },
+    {
+      "source": "/warnings/version-mismatch",
+      "destination": "/warnings/invalid-hook-call-warning#mismatching-versions-of-react-and-react-dom",
+      "permanent": false
+    },
     {
       "source": "/reference/react/directives",
       "destination": "/reference/rsc/directives",