Fix pipe_through example

Author: nallwhy

documentation/dsls/DSL-Ash.Resource.md

@@ -1121,7 +1121,7 @@ pipe_through [:change_state]
 ```
 
 ```
-pipe_through [:change_state], where: expr(^actor(:role) == :super_user)
+pipe_through [:change_state], where: attribute_equals(:role, :super_user)
 
 ```
 
@@ -1322,7 +1322,7 @@ pipe_through [:change_state]
 ```
 
 ```
-pipe_through [:change_state], where: expr(^actor(:role) == :super_user)
+pipe_through [:change_state], where: attribute_equals(:role, :super_user)
 
 ```
 
@@ -1647,7 +1647,7 @@ pipe_through [:change_state]
 ```
 
 ```
-pipe_through [:change_state], where: expr(^actor(:role) == :super_user)
+pipe_through [:change_state], where: attribute_equals(:role, :super_user)
 
 ```
 
@@ -1957,7 +1957,7 @@ pipe_through [:change_state]
 ```
 
 ```
-pipe_through [:change_state], where: expr(^actor(:role) == :super_user)
+pipe_through [:change_state], where: attribute_equals(:role, :super_user)
 
 ```
 
@@ -2250,7 +2250,7 @@ pipe_through [:change_state]
 ```
 
 ```
-pipe_through [:change_state], where: expr(^actor(:role) == :super_user)
+pipe_through [:change_state], where: attribute_equals(:role, :super_user)
 
 ```
 

lib/ash/resource/dsl.ex

@@ -522,7 +522,7 @@ defmodule Ash.Resource.Dsl do
       pipe_through [:change_state]
       """,
       """
-      pipe_through [:change_state], where: expr(^actor(:role) == :super_user)
+      pipe_through [:change_state], where: attribute_equals(:role, :super_user)
       """
     ],
     imports: [