fix(i18n): id -> ID

Reported at Transifex

Signed-off-by: rakekniven <2069590+rakekniven@users.noreply.github.com>

apps/provisioning_api/lib/Controller/UsersController.php

@@ -372,7 +372,7 @@ class UsersController extends AUserData {
 			}
 			$attempts++;
 		} while ($attempts < 10);
-		throw new OCSException($this->l10n->t('Could not create non-existing user id'), 111);
+		throw new OCSException($this->l10n->t('Could not create non-existing user ID'), 111);
 	}
 
 	/**