Documentation about setting a default map is incorrect

[bitboy85]

I'm using the recent nagvis version and also a recent version of this module.
I edited <ICINGAWEB_CONFIGDIR>/modules/nagvis/config.ini but its still showing demo-overview.

https://github.com/Icinga/icingaweb2-module-nagvis/blob/master/doc/90-FAQ.md
says that a different default-map should be set in nagvis.ini.php but there is no param like that and adding it leads to an error saying this param is unknown.
Unknown value default-map used in section global in main configuration file.
i also tried other sections

[slalomsk8er]

I did set the default map in /etc/icingaweb2/modules/nagvis/config.ini

[global]
default-map = test_1