remove unnecessary aria-label

apps/app/src/client/components/Admin/SlackIntegration/SlackIntegration.tsx

@@ -218,9 +218,6 @@ export const SlackIntegration = (): JSX.Element => {
             href={t('admin:slack_integration.docs_url.slack_integration')}
             target="_blank"
             rel="noopener noreferrer"
-            aria-label={t(
-              'admin:slack_integration.selecting_bot_types.slack_bot',
-            )}
           >
             <span className="visually-hidden">
               {t('admin:slack_integration.selecting_bot_types.slack_bot')}