docs(task-queue): update describe samples and guidance

[billrich2001]

This PR updates the Task Queue 'describe' command docs samples in commands.yml to clarify usage and include additional guidance.\n\n- Adjust example invocations\n- Add notes on stats and reachability\n\nGenerated docs can be produced locally via:\n\n\n\n

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[billrich2001]

Please forgive my ai generated comment 🤦‍♂️

I changed --build-id to --select-build-id in docs sample.

found issue because of this ticket where DSE accidentally gave wrong command based on docs sample.