Fix incorrect class name.

osu.Game/Users/Profile/ProfileHeader.cs

@@ -10,12 +10,12 @@ using osu.Game.Graphics.Sprites;
 
 namespace osu.Game.Users.Profile
 {
-    public class UserPageHeader : Container
+    public class ProfileHeader : Container
     {
         private readonly User user;
 
         private const float cover_height = 200, avatar_size = 110, avatar_bottom_position = -20;
-        public UserPageHeader(User user)
+        public ProfileHeader(User user)
         {
             this.user = user;
             RelativeSizeAxes = Axes.X;

osu.Game/Users/UserProfile.cs

@@ -53,7 +53,7 @@ namespace osu.Game.Users
             var sectionsContainer = new SectionsContainer
             {
                 RelativeSizeAxes = Axes.Both,
-                ExpandableHeader = new UserPageHeader(user),
+                ExpandableHeader = new ProfileHeader(user),
                 FixedHeader = tabs,
                 HeaderBackground = new Box
                 {