message: build(docs-infra): add a box around CLI command line reference syntax
  This commit helps to make the section that describes an overview of the syntax of a CLI command stand out from the surrounding text.
  Closes
  PR Close
diff: {% macro renderSyntax(container, prefix) -%}
  {% for name in container.names %}
  -<code-example hideCopy="true" class="no-box api-heading no-auto-link{% if container.deprecated %} deprecated-api-item{% endif %}">ng {%if prefix %}{$ prefix $} {% endif %}<span class="cli-name">{$ name $}</span>
  +<code-example hideCopy="true" class="api-heading no-auto-link{% if container.deprecated %} deprecated-api-item{% endif %}">ng {%if prefix %}{$ prefix $} {% endif %}<span class="cli-name">{$ name $}</span>
  {%- for arg in container.positionalOptions %} &lt;<var>{$ arg.name $}</var>&gt;{% endfor %}
  {%- if container.namedOptions.length %} [<var>options</var>]{% endif -%}
  </code-example>
  