Simplify like update code

lib/helpers/posts_helper.dart

@@ -85,7 +85,7 @@ class PostsHelper {
       linkDescription: map["link_description"],
       linkImage: map["link_image"],
       likes: map["likes"],
-      userLikes: map["userlike"],
+      userLike: map["userlike"],
       access: _APIUserAccessMap[map["user_access"]],
       comments: comments,
     );