message: docs(building): updating docs for ibm-common script tag
  This is an update based on the documentation provided by the analytics
  team.
diff: @@ -166,7 +166,7 @@ page:
  ```html
  <!-- IBM Tag Management and Site Analytics -->
  -<script src="//1.www.s81c.com/common/stats/ibm-common.js"></script>
  +<script src="//1.www.s81c.com/common/stats/ibm-common.js" type="text/javascript" async="async"></script>
  ```
  More details can be found at https://ibm.biz/enable-analytics.
  