chore: remove cursor style from nav link container (#620)

Author: loilo

lib/default-theme/DropdownLink.vue

@@ -54,6 +54,7 @@ export default {
 @import './styles/config.styl'
 
 .dropdown-wrapper
+  cursor pointer
   .dropdown-title
     display block
     &:hover

lib/default-theme/NavLinks.vue

@@ -108,7 +108,6 @@ export default {
     &:hover, &.router-link-active
       color $accentColor
   .nav-item
-    cursor pointer
     position relative
     display inline-block
     margin-left 1.5rem