UI: Switch 601 to sRGB as default color space

UI/window-basic-main.cpp

@@ -1383,7 +1383,7 @@ bool OBSBasic::InitBasicConfigDefaults()
 	config_set_default_uint(basicConfig, "Video", "FPSDen", 1);
 	config_set_default_string(basicConfig, "Video", "ScaleType", "bicubic");
 	config_set_default_string(basicConfig, "Video", "ColorFormat", "NV12");
-	config_set_default_string(basicConfig, "Video", "ColorSpace", "601");
+	config_set_default_string(basicConfig, "Video", "ColorSpace", "sRGB");
 	config_set_default_string(basicConfig, "Video", "ColorRange",
 				  "Partial");