docs for heater widget fail

[ReneTode]

it should be something like:

Heater
heater
A widget to control a heater or fan

Mandatory arguments:
icon_entity - the entity_id of the switch function
slider_entity - the entity_id from the input_number
Optional Arguments:
title - the title displayed on the tile
title2 - a second line of title text
Style Arguments:
title_style
title2_style
slider_style
widget_style
icon_style_active
icon_style_inactive