Small typo for AIO webhook polling script

[KroetschVialutions]

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• I have checked for existing issues and pull requests related to my suggestion.
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Type of Suggestion

Reporting a mistake

Relevant Documentation Links

https://docs.nextcloud.com/server/latest/admin_manual/webhook_listeners/index.html#screen-or-tmux-session

Summary

The docker AIO command uses the wrong container name for the outer exec

Details

docker exec -it nextcloud-aio-nextcloud is used twice in the command, but that doesn't work.
The first exec should actually be docker exec -it nextcloud-aio-mastercontainer, then the command works as described in the docs.

Additional Notes

No response