zhimi.airp.vb4, property monitor, environment:relative-humidity shows as "LUX" instead of %
**Describe the bug**
For Xiaomi Smart Air Purifier 4 Pro,  zhimi.airp.vb4, under property monitor "environment:relative-humidity" wrong units 

**Expected behavior**
Supposed to be % instead if homekit reading it as light sensor showing the correct number just not in % but in LUX current light level

