In Zabbix documentation on page https://www.zabbix.com/documentation/start there is a polish flag with link.
When you click on this link you receive an error:

"Permission Denied
Sorry, you don't have enough rights to continue. Perhaps you forgot to login?"

Even after logging in I get the same error.
If there is a Polish translation, please correct this error.
If there is no Polish translation please explain how I can help with translation and publication.