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

Automated import of CL 148972

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base