Correct "transfered" spelling

remote.inc contains 3 error messages all with the same copy and paste typo in:

      switch ($info['http_code']) {
        case 403:
          form_error($element, t('The remote file could not be transfered because access to the file was denied.'));
          break;
        case 404:
          form_error($element, t('The remote file could not be transfered because it was not found.'));
          break;
        default:
          form_error($element, t('The remote file could not be transfered due to an HTTP error (@code).', array('@code' => $info['http_code'])));
      }

"transfered" should be corrected to "transferred".