Broken links to non-existing Configuration Manual

[wollmers]

There are many broken links to a non-existing Configuration Reference Manual.

Either this manual should be provided, or the links removed and a short note included.

Needs clarification.

[itpartnerbln]

Broken links to Configuration Manual do still exist.

e.g.
[https://doc.otobo.org/doc/manual/config-reference/7.0/en/] in [(https://doc.otobo.org/manual/admin/10.1/en/content/introduction.html#become-otobo-expert)]

_Become OTOBO Expert

The next chapters of this manual describe the features and configuration settings of OTOBO more detailed. There is a separated manual for Configuration Options References, that gives you a good overview of System Configuration, that can be adjusted to modify the behavior of OTOBO._