Update index.mdx (#24351)

Author: thomasgauvin

src/content/docs/workers/tutorials/postgres/index.mdx

@@ -330,7 +330,7 @@ You have successfully created a Cloudflare Worker that connects to a PostgreSQL
 Create a Hyperdrive configuration using the connection string for your PostgreSQL database.
 
 ```bash
-npx wrangler hyperdrive create <NAME_OF_HYPERDRIVE_CONFIG> --connection-string="postgres://user:password@HOSTNAME_OR_IP_ADDRESS:PORT/database_name"
+npx wrangler hyperdrive create <NAME_OF_HYPERDRIVE_CONFIG> --connection-string="postgres://user:password@HOSTNAME_OR_IP_ADDRESS:PORT/database_name" --caching-disabled
 ```
 
 This command outputs the Hyperdrive configuration `id` that will be used for your Hyperdrive [binding](/workers/runtime-apis/bindings/). Set up your binding by specifying the `id` in the Wrangler file.