adding redirect

Author: pete-vielhaber

vercel.json

@@ -87,7 +87,7 @@
     },
     {
       "source": "/(bold/concepts/public-preview-expectations/?)",
-      "destination": "/how-arbitrum-works/bold/public-preview-expectations",
+      "destination": "/how-arbitrum-works/bold/gentle-introduction",
       "permanent": false
     },
     {
@@ -435,6 +435,11 @@
       "destination": "/how-arbitrum-works/optimistic-rollup",
       "permanent": false
     },
+    {
+      "source": "/(how-arbitrum-works/bold/public-preview-expectations/?)",
+      "destination": "/how-arbitrum-works/bold/gentle-introduction",
+      "permanent": false
+    },
     {
       "source": "/(how-arbitrum-works/fraud-proofs/challenge-manager/?)",
       "destination": "/how-arbitrum-works/validation-and-proving/proving-and-challenges",