docs: NFTCard demo rendering error

Author: gin-lsl

packages/web3/src/nft-card/demos/wagmi.tsx

@@ -6,7 +6,7 @@ import { mainnet } from 'wagmi/chains';
 const config = createConfig({
   chains: [mainnet],
   transports: {
-    [mainnet.id]: http(),
+    [mainnet.id]: http(`https://api.zan.top/node/v1/eth/mainnet/${YOUR_ZAN_API_KEY}`),
   },
   connectors: [],
 });