style(watermark): edit sass

src/packages/__VUE/watermark/index.scss

@@ -1,6 +1,6 @@
 .nut-watermark {
   position: absolute;
-  z-index: $water-mark-z-index;
+  z-index: $watermark-z-index;
   left: 0;
   right: 0;
   top: 0;

src/packages/styles/variables-jdb.scss

@@ -878,7 +878,7 @@ $comment-shop-color: $primary-color !default;
 $ellipsis-expand-collapse-color: #3460fa !default;
 
 // WaterMark
-$water-mark-z-index: 2000 !default;
+$watermark-z-index: 2000 !default;
 
 @import './mixins/index';
 @import './animation/index';

src/packages/styles/variables-jdt.scss

@@ -784,7 +784,7 @@ $comment-shop-color: $primary-color !default;
 $ellipsis-expand-collapse-color: #3460fa !default;
 
 // WaterMark
-$water-mark-z-index: 2000 !default;
+$watermark-z-index: 2000 !default;
 
 @import './mixins/index';
 @import './animation/index';

src/packages/styles/variables.scss

@@ -809,7 +809,7 @@ $comment-shop-color: $primary-color !default;
 $ellipsis-expand-collapse-color: #3460fa !default;
 
 // WaterMark
-$water-mark-z-index: 2000 !default;
+$watermark-z-index: 2000 !default;
 
 @import './mixins/index';
 @import './animation/index';