Merge branch '(feat)-add-express-relay' of github.com:pyth-network/documentation into (feat)-add-express-relay

Author: anihamde

pages/express-relay/error-codes.mdx

@@ -0,0 +1,10 @@
+{
+  "Auction": "auction",
+  "Opportunities": "opportunities",
+  "Permissioning": "permissioning",
+  "Relayer": "relayer",
+  "error codes": {
+    "title": "Error Codes ↗",
+    "href": "https://www.notion.so/pyth-network/Error-codes-explanation-c90c375eb9a4430494578a713a0d7e68?pvs=4"
+  }
+}