Code style cleanup for ApiQuerySiteinfo.php.

This fixes the code style error (2 blank lines in a row) introduced by
I17aae9512e0994222785c5edc9de644685b2498c as well as a number of other
line-too-long errors flagged by phpcs.

Change-Id: I3c628eab101ee97d0182ee2db37b53105346af99
Merge "Code style cleanup for ApiQuerySiteinfo.php."