Update "drush updb" library message to be more relevent

sorry, not sure how to label patches without creating the issue first:

here is the patch in pure text dropzonejs.install, line 40:

  else {
    $requirements['dropzonejs_library'] = [
      'title' => t('Dropzone library missing'),
      'description' => t(" [error]  Dropzonejs requires the dropzone.min.js library. Add the package to Composer with the following single-line terminal command or refer to the installation documentation on https://www.drupal.org/project/dropzonejs 

      composer config repositories.dropzone '{\"type\":\"package\",\"package\":{\"name\":\"enyo/dropzone\",\"version\":\"5.9.3\",\"type\":\"drupal-library\",\"dist\":{\"url\":\"https://github.com/dropzone/dropzone/releases/download/v5.9.3/dist.zip\",\"type\":\"zip\"}}}'"),
      'severity' => REQUIREMENT_ERROR,
    ];
  }

Patch file is empty, contributions need to be done as merge requests now.