fix server render error

src/pages/docs/index.tsx

@@ -1,7 +1,12 @@
+import React, { useEffect } from 'react'
 import { navigate } from "gatsby"
 
-const DocsRedirect = () => {
-  navigate("/docs/getting-started-with-open-data-hub")
+const DocsRedirect: React.FC = () => {
+  useEffect(() => {
+    navigate("/docs/getting-started-with-open-data-hub")
+  }, [])
+
+  return null
 }
 
 export default DocsRedirect