docs: Clarify resource code in Actions guide (#1156)

documentation/topics/actions/actions.md

@@ -98,7 +98,9 @@ end
 
 # in the resource
 
-defaults [:read, ...]
+actions do 
+  defaults [:read, ...]
+end
 ```
 
 And here is the "right way", where the rules about getting the top tickets have been moved into the resource as a nicely named action, and included in the `code_interface` of that resource. The reality of the situation is that `top_tickets/1` is meant to be obsoleted by your Ash resource! Here is how it _should_ be done.
@@ -110,7 +112,8 @@ code_interface do
   define :top, args: [:user_id]
 end
 
-read :top do
+actions do 
+  read :top do
     argument :user_id, :uuid do
       allow_nil? false
     end
@@ -118,6 +121,7 @@ read :top do
     prepare build(limit: 10, sort: [opened_at: :desc])
 
     filter expr(priority in [:medium, :high] and representative_id == ^arg(:user_id) and status == :open)
+  end
 end
 ```