fix: bad example for rotateConsumerKey (#1113)

Author: ryanwaits

content/docs/en/tools/chainhooks/(chainhook-sdk)/secrets.mdx

@@ -35,7 +35,7 @@ const client = new ChainhooksClient({
 });
 
 // Store this value securely and use it to validate webhook requests
-const secret = await client.rotateConsumerSecret(chainhookUuid).secret;
+const secret = await client.rotateConsumerSecret().secret;
 ```
 
 ### Example Fastify server