防御塔跳字显示优化

ActionTowerDefense/Assets/Resources/Prefab/FX/InjuryNum.prefab

@@ -28,7 +28,7 @@ RectTransform:
   m_PrefabAsset: {fileID: 0}
   m_GameObject: {fileID: 2310204599161248874}
   m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
-  m_LocalPosition: {x: 0, y: 0, z: 0}
+  m_LocalPosition: {x: 0, y: 0, z: -0.5}
   m_LocalScale: {x: 0.01, y: 0.01, z: 0.01}
   m_ConstrainProportionsScale: 0
   m_Children: