changed overseerr image type (#73)

template/apps/overseerr.json

@@ -25,7 +25,7 @@
     "image_arm32": "lscr.io/linuxserver/overseerr:latest",
     "image_arm64": "lscr.io/linuxserver/overseerr:latest",
     "image_amd64": "lscr.io/linuxserver/overseerr:latest",
-    "logo": "https://raw.githubusercontent.com/pi-hosted/pi-hosted/master/images/overseerr.jpg",
+    "logo": "https://raw.githubusercontent.com/pi-hosted/pi-hosted/master/images/overseerr.png",
     "name": "overseerr",
     "platform": "linux",
     "ports": [