Added jsx note

Author: D-K-P

docs/guides/examples/react-email.mdx

@@ -121,3 +121,7 @@ To test this task in the [dashboard](https://cloud.trigger.dev), you can use the
 ## Deploying your task
 
 Deploy the task to production using the Trigger.dev CLI `deploy` command.
+
+## Troubleshooting
+
+- If you are having `jsx` issues, you can customize the `jsx` options that are passed to `esbuild` during the build process using our [jsx config option](/config/config-file#jsx).