Remove --detach from airnode-client commands

[dcroote]

Closes #1213. The docker run arguments -it aren't needed in this case and arent' used in airnode-examples:

https://github.com/api3dao/airnode/blob/08a2985a4cde546283956457c9a87f1237d7e380/packages/airnode-examples/src/scripts/run-airnode-locally.ts#L25-L39

[github-actions[bot]]

Visit the preview URL for this PR (updated for commit 10f5e98):

https://api3-docs--pr1214-dcroote-issue1213-iw62vbcg.web.app

_{(expires Sun, 12 Mar 2023 21:32:07 GMT)}

_{🔥 via Firebase Hosting GitHub Action 🌎}

_{Sign: d319eb7cbe610768342d5dc1b5cd1f3aed912886}

[wkande]

@dcroote did you remove the use of --detach to illustrate the use of logs in the guide for the container? Making it easier to access the logs I guess.

[dcroote]

By removing --detach, logs are now output to the console, which is more befitting of a user tutorial.