Add intro text

Author: aguingand

docs/guide/show-fields/dashboard.md

@@ -1,6 +1,8 @@
 # Dashboard
 
-Class: `Code16\Sharp\Show\Fields\SharpShowDashboardField`
+Class: `Code16\Sharp\Show\Fields\SharpShowDashboardField`.
+
+The field allows you to integrate a [Dashboard](../building-dashboard.md) into your Show Page.
 
 ## Constructor
 

docs/guide/show-fields/entity-list.md

@@ -2,6 +2,8 @@
 
 Class: `Code16\Sharp\Show\Fields\SharpShowEntityListField`
 
+The field allows you to integrate an [Entity List](../building-entity-list.md) into your Show Page.
+
 ## Constructor
 
 This field needs, as first parameter, either the entity key or the `SharpEntity` class that declares the Entity List which will be included in the Show Page.