add ref url

packages/app/src/components/Me/PasswordSettings.jsx

@@ -100,6 +100,7 @@ class PasswordSettings extends React.Component {
             <label htmlFor="oldPassword" className="col-md-3 text-md-right">{ t('personal_settings.current_password') }</label>
             <div className="col-md-5">
               {/* to prevent autocomplete username into userForm[email] in BasicInfoSettings component */}
+              {/* https://developer.mozilla.org/en-US/docs/Web/Security/Securing_your_site/Turning_off_form_autocompletion */}
               <input type="password" autoComplete="new-password" style={{ display: 'none' }} />
               <input
                 className="form-control"