Steps to reproduce:

1. Search Zabbix docs for Frontend language installation
2. Get the following result: https://www.zabbix.com/documentation/current/manual/installation/frontend?s[]=language
3. Read the note at the top...
4. ...Which links here: https://www.zabbix.com/documentation/current/manual/web_interface/user_profile#see_also
5. Which is an external source, no the Zabbix docs

Result:
A link to zabbix.org, that still works.
Which is an external source, no the official Zabbix docs.
Expected:
An up-to-date guide for every supported OS, about how I could add/install additional Zabbix frontend languages This guide has to be in the Zabbix docs and not an external source, with potentially old or outdated information.