test(integration): update search operator error message expectation

Signed-off-by: Vitor Mattos <1079143+vitormattos@users.noreply.github.com>

Author: vitormattos

tests/integration/features/api/profile_fields.feature

@@ -311,7 +311,7 @@ Feature: profile fields API
     Then the response should have a status code 400
     And the response should be a JSON array with the following mandatory values
       | key                   | value                            |
-      | (jq).ocs.data.message | search operator is not supported |
+      | (jq).ocs.data.message | The search operator is not supported. |
 
   Scenario: admins get not found when search field definition does not exist
     Given as user "admin"