docs: use 200 for routes response across docs (#14418)

www/apps/resources/app/integrations/guides/okta/page.mdx

@@ -830,7 +830,7 @@ export const POST = async (
       },
     })
 
-  return res.status(201).json({ user })
+  return res.status(200).json({ user })
 }
 ```