chore(docs): Remove -icon string from icon png's (#2040)

* rename icons (remove `-icon`)

* Remove (`-icon`) from chart.yaml

* Add 2 icons

* slight format change

* remove -icon

charts/stable/zwavejs2mqtt/Chart.yaml

@@ -8,7 +8,7 @@ deprecated: false
 description: Fully configurable Zwave to MQTT gateway and Control Panel using NodeJS
   and Vue
 home: https://github.com/truecharts/apps/tree/master/charts/stable/zwavejs2mqtt
-icon: https://truecharts.org/_static/img/appicons/zwavejs2mqtt-icon.png
+icon: https://truecharts.org/_static/img/appicons/zwavejs2mqtt.png
 keywords:
 - zwavejs2mqtt
 - zwave-js