#1308 check_multiple.tex doesn't use GEOMETRY package to set LETTER page size

The check.tex file uses

\usepackage[letterpaper,top=2cm,bottom=1.5cm,left=1.1cm,right=1.5cm]{geometry}

but the file check_multiple.tex doesn't.

[Chris Travers]

Not fixed, but since 1.3 is oldstable this is not the sort of change I want to make there, but will leave 1.4 ticket open.