UI: Update OSX to macOS in English translation

UI/data/locale/en-US.ini

@@ -52,8 +52,8 @@ Untitled="Untitled"
 New="New"
 Duplicate="Duplicate"
 Enable="Enable"
-DisableOSXVSync="Disable OSX V-Sync"
-ResetOSXVSyncOnExit="Reset OSX V-Sync on Exit"
+DisableOSXVSync="Disable macOS V-Sync"
+ResetOSXVSyncOnExit="Reset macOS V-Sync on Exit"
 HighResourceUsage="Encoding overloaded! Consider turning down video settings or using a faster encoding preset."
 Transition="Transition"
 QuickTransitions="Quick Transitions"