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/unpackerr/Chart.yaml

@@ -9,7 +9,7 @@ description: This application runs as a daemon on your download host. It checks
   completed downloads and extracts them so Radarr, Lidarr, Sonarr, and Readarr may
   import them
 home: https://github.com/truecharts/apps/tree/master/charts/stable/unpackrr
-icon: https://truecharts.org/_static/img/appicons/unpackerr-icon.png
+icon: https://truecharts.org/_static/img/appicons/unpackerr.png
 keywords:
 - unpackerr
 - sonarr