docs(specs): update OpenRPC specifications from Daikon (#1415)

Author: alchemy-bot

src/openrpc/chains/robinhood/robinhood.yaml

@@ -7,6 +7,8 @@ info:
   description: A specification of the standard JSON-RPC methods for Robinhood Chain.
   version: 0.0.0
 servers:
+  - url: https://robinhood-mainnet.g.alchemy.com/v2
+    name: Robinhood Chain Mainnet
   - url: https://robinhood-testnet.g.alchemy.com/v2
     name: Robinhood Chain Testnet
 methods: