message: refactor: fix template lint & use angle brackets for search-help-modal
diff: -<div id="ember-bootstrap-modal-container">
  - {{#bs-modal open=isOpen as |modal|}}
  - {{#modal.header}}
  - <h3 class="modal-title">{{t 'app_components.search_help_modal.title'}}</h3>
  - {{/modal.header}}
  - {{#modal.body}}
  - <h4> {{t 'app_components.search_help_modal.queries'}} </h4>
  +<div id='ember-bootstrap-modal-container'>
  + <BsModal
  + @open={{this.isOpen}}
  + as |modal|
  + >
  + <modal.header>
  + <h3 class='modal-title'>
  + {{t 'app_components.search_help_modal.title'}}
  + </h3>
  + </modal.header>
  + <modal.body>
  + <h4>
  + {{t 'app_components.search_help_modal.queries'}}
  + </h4>
  <p>
  {{t 'app_components.search_help_modal.searchSyntax'}}
  {{t 'app_components.search_help_modal.helpDescription'}}
  </p>
  - <ul class="ex-list">
  - {{#each examples as |example|}}
  + <ul class='ex-list'>
  + {{#each this.examples as |example|}}
  <li>
  - <a href={{concat currentPath '?q=' example.q}}>{{example.text}}</a>
  + <a href={{concat this.currentPath '?q=' example.q}}>
  + {{example.text}}
  + </a>
  </li>
  {{/each}}
  </ul>
  - {{/modal.body}}
  - {{#modal.footer}}
  - {{#bs-button onClick=(action modal.close)}}{{t 'app_components.search_help_modal.close'}}{{/bs-button}}
  - {{/modal.footer}}
  - {{/bs-modal}}
  + </modal.body>
  + <modal.footer>
  + <BsButton @onClick={{action modal.close}}>
  + {{t 'app_components.search_help_modal.close'}}
  + </BsButton>
  + </modal.footer>
  + </BsModal>
  </div>
  