message: build(docs-infra): improve message
  improve the message by adding the word "is"
  (outcome: "Further information is available in...", compared to
  "Further information available in...")
  PR Close
diff: <section class="description">
  <h2>Description</h2>
  {$ doc.description | trimBlankLines | marked $}
  - {% if doc.usageNotes %}<p>Further information available in the <a href="#usage-notes">Usage Notes...</a></p>{%
  + {% if doc.usageNotes %}<p>Further information is available in the <a href="#usage-notes">Usage Notes...</a></p>{%
  endif %}
  </section>
  {% endif %}
  \ No newline at end of file
  