fix typo

native/Avalonia.Native/src/OSX/cursor.h

@@ -25,7 +25,7 @@ public:
         return _native;
     }
     
-    bool IsHiden ()
+    bool IsHidden ()
     {
         return _isHidden;
     }

native/Avalonia.Native/src/OSX/window.mm

@@ -354,7 +354,7 @@ public:
             this->cursor = avnCursor->GetNative();
             UpdateCursor();
             
-            if(avnCursor->IsHiden())
+            if(avnCursor->IsHidden())
             {
                 [NSCursor hide];
             }