Steps to reproduce:

1. https://www.zabbix.com/documentation/4.4/manual/discovery/low_level_discovery
2. Image under Custom macros seems not to be correct
   https://www.zabbix.com/documentation/4.4/_detail/manual/discovery/low_level_discovery/fs_get_lld_b.png?id=manual%3Adiscovery%3Alow_level_discovery 

Result:
The image has 2 times {#FSNAME} macro defined
Expected:
For version 5.0 documentation the image is already corrected as is shows {#FSNAME} and {#FSTYPE}