chore: prettier all less files

src/sku/index.less

@@ -102,7 +102,7 @@
       width: 100%;
       height: 100%;
       background: currentColor;
-      opacity: .1;
+      opacity: 0.1;
       content: '';
     }
   }
@@ -178,7 +178,7 @@
 
         &::before {
           background: currentColor;
-          opacity: .1;
+          opacity: 0.1;
         }
       }
 
@@ -188,7 +188,7 @@
         cursor: not-allowed;
 
         .van-sku-row__item-img {
-          opacity: .3;
+          opacity: 0.3;
         }
       }
     }
@@ -282,7 +282,7 @@
       z-index: 1;
       padding: 6px;
       color: @sku-upload-mask-color;
-      opacity: .8;
+      opacity: 0.8;
 
       &::before {
         background-color: @white;