MM-22064: Update verbage for restricted domain errors (#14563)

* update verbage for domain disallowed strings

* update text again

Co-authored-by: mattermod <mattermod@users.noreply.github.com>

i18n/en.json

@@ -2072,7 +2072,7 @@
   },
   {
     "id": "api.team.is_team_creation_allowed.domain.app_error",
-    "translation": "Email must be from a specific domain (e.g. @example.com). Please ask your System Administrator for details."
+    "translation": "The user cannot be added as the domain associated with the account is not permitted. Contact your System Administrator for additional details."
   },
   {
     "id": "api.team.join_team.post_and_forget",
@@ -2080,7 +2080,7 @@
   },
   {
     "id": "api.team.join_user_to_team.allowed_domains.app_error",
-    "translation": "Email must be from a specific domain (e.g. @example.com). Please ask your team or system administrator for details."
+    "translation": "The user cannot be added as the domain associated with the account is not permitted. Contact your System Administrator for additional details."
   },
   {
     "id": "api.team.leave.left",