docs: Update getting-started-with-authentication.md (#244)

Add note for those using policies

documentation/tutorials/getting-started-with-authentication.md

@@ -152,6 +152,13 @@ defmodule MyApp.Accounts.Token do
     table "tokens"
     repo MyApp.Repo
   end
+  
+  # If using policies, add the following bypass:
+  # policies do
+  #   bypass AshAuthentication.Checks.AshAuthenticationInteraction do
+  #     authorize_if always()
+  #   end
+  # end
 end
 ```
 
@@ -198,6 +205,13 @@ defmodule MyApp.Accounts.User do
   identities do
     identity :unique_email, [:email]
   end
+  
+  # If using policies, add the folowing bypass:
+  # policies do
+  #   bypass AshAuthentication.Checks.AshAuthenticationInteraction do
+  #     authorize_if always()
+  #   end
+  # end
 end
 ```