rename desk to desktop, remove virtual and add override

CMakeLists.txt

@@ -400,7 +400,7 @@ if(APPLE)
 endif(APPLE)
 
 if(WITH_DESKTOP_INTEGRATION)
-  add_subdirectory(desk)
+  add_subdirectory(desktop)
 endif()
 
 ######################################################################

desktop/kde/aseprite_thumb_creator.h

@@ -9,8 +9,8 @@ Q_DECLARE_LOGGING_CATEGORY(LOG_ASEPRITE_THUMBCREATOR)
 
 class AsepriteThumbCreator : public ThumbCreator {
   public:
-    virtual bool create(const QString& path, int width, int height, QImage& img);
-    virtual Flags flags() const;
+    bool create(const QString& path, int width, int height, QImage& img) override;
+    Flags flags() const override;
 };
 
 #endif