docs: fix nodeUrl code typo (#1046)

Author: 9oelM

www/versioned_docs/version-5.24.3/guides/events.md

@@ -120,7 +120,7 @@ In this example, if you want to read the events recorded in the last 10 blocks,
 ```typescript
 import { RpcProvider } from 'starknet';
 const providerRPC = new RpcProvider({
-  nodeUrl: "{ nodeUrl: 'https://starknet-goerli.infura.io/v3/' + infuraKey }",
+  nodeUrl: 'https://starknet-goerli.infura.io/v3/' + infuraKey,
 }); // for an Infura node on Testnet
 const lastBlock = await providerRPC.getBlock('latest');
 const keyFilter = [num.toHex(hash.starknetKeccak('EventPanic')), '0x8'];