mac-syphon: Name plugin "Game Capture (Syphon)"

People were getting a bit confused over what the "Syphon" source was,
and often wouldn't use it because they didn't know what it was for.

plugins/mac-syphon/data/locale/en-US.ini

@@ -1,3 +1,4 @@
+Syphon="Game Capture (Syphon)"
 Source="Source"
 LaunchSyphonInject="Launch SyphonInject"
 Inject="Inject"

plugins/mac-syphon/syphon.m

@@ -91,7 +91,7 @@ static inline void handle_application_launch(syphon_t s, NSArray *new)
 
 static const char *syphon_get_name()
 {
-	return "Syphon";
+	return obs_module_text("Syphon");
 }
 
 static void stop_client(syphon_t s)