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/incubator/automatic-music-downloader/Chart.yaml

@@ -7,7 +7,7 @@ dependencies:
 deprecated: false
 description: A Lidarr companion script to automatically download music for Lidarr.
 home: https://github.com/truecharts/apps/tree/master/charts/incubator/automatic-music-downloader
-icon: https://truecharts.org/_static/img/appicons/automatic-music-downloader-icon.png
+icon: https://truecharts.org/_static/img/appicons/automatic-music-downloader.png
 keywords:
 - automatic
 - music