Fixed a few places. Closes #11

gui/combat_ui.cpp

@@ -17,7 +17,7 @@ namespace gui {
         );
   }
 
-  DinkyECS::Entity CombatUI::make_button(
+  guecs::Entity CombatUI::make_button(
       std::string name,
       Events::GUI event,
       int action,

gui/combat_ui.hpp

@@ -17,7 +17,7 @@ namespace gui {
       void render(sf::RenderWindow& window);
       void update_level(GameLevel &level);
       bool mouse(float x, float y, bool hover);
-      DinkyECS::Entity make_button(std::string name, Events::GUI event,
+      guecs::Entity make_button(std::string name, Events::GUI event,
           int action, const std::string &icon_name,
           const std::string &sound, const std::string &effect_name);
   };