chore: update agent configuration to show verbose mode (#3415)

* chore: update agent configuration to show verbose mode

* Update docs/docs/configuration/agent.mdx

Co-authored-by: Julianne Fermi <julianne@kubeshop.io>

---------

Co-authored-by: Julianne Fermi <julianne@kubeshop.io>

docs/docs/configuration/agent.mdx

@@ -30,3 +30,7 @@ Once started, Tracetest Agent exposes OTLP ports `4317` and `4318` to ingest tra
 :::note
 Unlike with [Tracetest Core](/core/getting-started/overview.mdx), you are not required to run a dedicated [Tracetest Server](/core/configuration/server.mdx). Running Tracetest Agent and using Tracetest as the remote server requires no configuration or infrastructure management.
 :::
+
+If you are running the agent on a server and want to see detailed information about its execution, you can start the agent with the `--mode=verbose` flag:
+
+![](https://res.cloudinary.com/djwdcmwdz/image/upload/v1701300172/docs/verbose-mode_ddv3ql.png)