Fix broken link (#2685)

Author: SarahSoutoul

redirects/static/docs.json

@@ -3539,6 +3539,11 @@
     "destination": "/docs/getting-started/quickstart/overview",
     "permanent": true
   },
+  {
+    "source": "/docs/quickstart",
+    "destination": "/docs/getting-started/quickstart",
+    "permanent": true
+  },
   {
     "source": "/docs/quickstarts/nextjs",
     "destination": "/docs/nextjs/getting-started/quickstart",