remove generic messages and change from backtick to bold

added info to avoid using Element Access Token because it will prevent the bot from functioning properly in the Encrypted room. 

Also added maubot simple service management on how to stop and start the maubot service

works in encrypted rooms now, so I removed the notion that it does not.

Add two important informations:
- The `mbc` commands must be ran in the docker container
- Not using this method prevent from using encrypted rooms with the bot

* Fix bug that prevented user with external nginx from launch

The backslash was missing and prevented users from starting the bot

* Add necessary config for ext nginx to docs

* Add automatic config for ext nginx, adjust docs

* Remove unneeded and possibly puzzeling documentation

* Make interface hidden behind proxy by default

* Remove expose option and replace with http_bind_port

Reasoning: This is a similar binary trigger but allows to bin not on all interfaces

* Clarify maubot admin purpose

* Remove unnecessary edif

* Extend docs to prevent common misconceptions

* Make http_bind_port singular, do not allow multiple values

* Make optional again