am 51b22d74: am 221c9552: AI 148972: fix link to the installing guide to 1.5;   fix a couple layout bugs in the document.   BUG=1860640

Merge commit '51b22d74a39ef7f6a3684a36bb48ace523e83413'

* commit '51b22d74a39ef7f6a3684a36bb48ace523e83413':
  AI 148972: fix link to the installing guide to 1.5;