Link to state variants docs from config docs

docs/source/_assets/less/markdown.less

@@ -111,7 +111,8 @@
 
   > ul, > ol {
     @apply .text-slate-dark;
-    margin: 0 0 2em;
+    @apply .m-0;
+    @apply .mb-4;
   }
 
   > ul {

docs/source/docs/configuration.blade.md

@@ -165,6 +165,8 @@ The available state variants are:
 - `focus`, for generating versions of those utilities that only take effect on focus
 - `group-hover`, for generating versions of those utilities that only take effect when a marked parent element is hovered
 
+Learn more about state variants in the ["State Variants" documentation](/docs/state-variants).
+
 To include a module but not generate any state variants, use an empty array:
 
 ```js