removed unneccessary margin

src/client/js/components/Admin/SlackIntegration/CustomBotWithoutProxySettingsAccordion.jsx

@@ -105,7 +105,7 @@ const CustomBotWithoutProxySettingsAccordion = ({
         title={<><span className="mr-2">①</span>{t('admin:slack_integration.accordion.create_bot')}</>}
       >
         <div className="my-5 d-flex flex-column align-items-center">
-          <button type="button" className="btn btn-primary text-nowrap mx-1" onClick={() => window.open('https://api.slack.com/apps', '_blank')}>
+          <button type="button" className="btn btn-primary text-nowrap" onClick={() => window.open('https://api.slack.com/apps', '_blank')}>
             {t('admin:slack_integration.accordion.create_bot')}
             <i className="fa fa-external-link ml-2" aria-hidden="true" />
           </button>