Update hover color for horizontal dots in android dark theme

stylesheets/android-dark.scss

@@ -345,4 +345,10 @@ $text-dark_l2: darken($text-dark, 30%);
       background-color: $grey-dark_l2;
     }
   }
+
+  .dots-horizontal-icon {
+    &:hover {
+      @include color-svg('../images/dots-horizontal.svg', $grey_l);
+    }
+  }
 }