mac-capture: Rename 'mac-screen-capture.m'

plugins/mac-capture/CMakeLists.txt

@@ -13,7 +13,7 @@ target_sources(
           mac-display-capture.m
 		  mac-sck-common.h
 		  mac-sck-common.m
-          mac-screen-capture.m
+          mac-sck-video-capture.m
           mac-window-capture.m
           plugin-main.c
           window-utils.h