To address HACS validation errors

Author: mkanet

custom_components/plex_recently_added/manifest.json

@@ -3,6 +3,7 @@
     "name": "Plex Recently Added",
     "version": "0.3.9",
     "documentation": "https://github.com/custom-components/sensor.plex_recently_added",
+    "issue_tracker": "https://github.com/custom-components/sensor.plex_recently_added/issues",
     "dependencies": [],
     "codeowners": ["@maykar"],
     "requirements": []

hacs.json

@@ -1,5 +1,4 @@
 {
     "name": "Plex Recently Added",
-    "content_in_root": false,
-    "domains": ["sensor"]
+    "content_in_root": false
 }