新增 "鼠标滚轮翻页"

Add 'Mouse wheel page'

app/src/main/res/values-zh/strings.xml

@@ -195,6 +195,7 @@
     <string name="img_cover">封面</string>
     <string name="book">书</string>
     <string name="volume_key_page">音量键翻页</string>
+    <string name="mouse_wheel_page">鼠标滚轮翻页</string>
     <string name="click_turn_page">点击翻页</string>
     <string name="page_anim">翻页动画</string>
     <string name="book_page_anim">翻页动画（本书）</string>