Improve some localization strings

src/NzbDrone.Core/Localization/Core/en.json

@@ -342,6 +342,7 @@
   "Result": "Result",
   "Retention": "Retention",
   "RSS": "RSS",
+  "RssFeed": "RSS Feed",
   "RSSIsNotSupportedWithThisIndexer": "RSS is not supported with this indexer",
   "Save": "Save",
   "SaveChanges": "Save Changes",
@@ -377,7 +378,7 @@
   "SettingsSqlLoggingHelpText": "Log all SQL queries from Prowlarr",
   "SettingsTimeFormat": "Time Format",
   "ShowAdvanced": "Show Advanced",
-  "ShownClickToHide": "Shown, click to hide",
+  "ShownClickToHide": "Advanced settings shown, click to hide",
   "ShowSearch": "Show Search",
   "ShowSearchHelpText": "Show search button on hover",
   "Shutdown": "Shutdown",