feat: marks dot style

Author: howiepu

assets/index.less

@@ -131,9 +131,18 @@
     border: 2px solid #e9e9e9;
     border-radius: 50%;
     cursor: pointer;
+
+    &.@{prefixClass}-marks-dot {
+      border-color: #d6d6d6;
+    }
+
     &-active {
-      border-color: tint(@primary-color, 50%);
+      &,
+      &.@{prefixClass}-marks-dot {
+        border-color: tint(@primary-color, 50%);
+      }
     }
+
     &-reverse {
       margin-right: -4px;
     }