[hm] Update doc to be in sync with code
[hm] Update doc to be in sync with code

shmick/HeaterMeter,dwright134/HeaterMeter,kdakers80/HeaterMeter,dwright134/HeaterMeter,CapnBry/HeaterMeter,CapnBry/HeaterMeter,shmick/HeaterMeter,dwright134/HeaterMeter,dwright134/HeaterMeter,kdakers80/HeaterMeter,kdakers80/HeaterMeter,kdakers80/HeaterMeter,kdakers80/HeaterMeter,CapnBry/HeaterMeter,CapnBry/HeaterMeter,shmick/HeaterMeter,shmick/HeaterMeter,shmick/HeaterMeter,shmick/HeaterMeter,CapnBry/HeaterMeter,CapnBry/HeaterMeter,dwright134/HeaterMeter,dwright134/HeaterMeter,kdakers80/HeaterMeter,CapnBry/HeaterMeter,shmick/HeaterMeter