Fixed: Make Notification trigger texts consistent

Fixes #5012

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

@@ -481,11 +481,11 @@
   "OAuthPopupMessage": "Pop-ups are being blocked by your browser",
   "Ok": "Ok",
   "OnDeleteHelpText": "On Delete",
-  "OnDownloadHelpText": "Be notified when movies are successfully imported",
+  "OnDownloadHelpText": "On Import",
   "OnGrabHelpText": "On Grab",
   "OnHealthIssueHelpText": "On Health Issue",
   "OnRenameHelpText": "On Rename",
-  "OnUpgradeHelpText": "Be notified when movies are upgraded to a better quality",
+  "OnUpgradeHelpText": "On Upgrade",
   "OpenBrowserOnStart": "Open browser on start",
   "OpenThisModal": "Open This Modal",
   "Options": "Options",