替换首页图

src/pages/index/index.html

               <img
                 class="lazy"
                 data-src="./static/images/index/banner2.jpg"
-                data-srcM="./static/images/index/banner1m.jpg"
+                data-srcM="./static/images/index/banner2m.jpg"
                 alt=""
               />
               <div class="slideCon">
               <img
                 class="lazy"
                 data-src="./static/images/index/banner3.jpg"
-                data-srcM="./static/images/index/banner1m.jpg"
+                data-srcM="./static/images/index/banner2m.jpg"
                 alt=""
               />
               <div class="slideCon">
               <img
                 class="lazy"
                 data-src="./static/images/index/banner4.jpg"
-                data-srcM="./static/images/index/banner1m.jpg"
+                data-srcM="./static/images/index/banner4m.jpg"
                 alt=""
               />
               <div class="slideCon">
               <img
                 class="lazy"
                 data-src="./static/images/index/banner5.jpg"
-                data-srcM="./static/images/index/banner1m.jpg"
+                data-srcM="./static/images/index/banner5m.jpg"
                 alt=""
               />
               <div class="slideCon">