Update skin.json

skin.json

@@ -1,5 +1,5 @@
 {
-	"@Note": "Note: Doin't forget when updating to update the foreground.php file with the same change.",
+	"@Note": "Note: Don't forget when updating to update the foreground.php file with the same change.",
 	"name": "Foreground",
 	"version": "1.2",
 	"author": [