Fixed capitalization in glade file

# Please enter the commit message for your changes. Lines starting
# with '#' will be ignored, and an empty message aborts the commit.
# On branch master
# Changes to be committed:
#   (use "git reset HEAD <file>..." to unstage)
#
#	modified:   debian/changelog
#	modified:   share/mintstick/mintstick.glade
#
# Untracked files:
#   (use "git add <file>..." to include in what will be committed)
#
#	build-stamp
#	debian/files
#	debian/mintstick.debhelper.log
#	debian/mintstick.substvars
#	debian/mintstick/
#	debian/mo/
