Added missing bugtracker link.

# 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:   debian/control
#	modified:   ppcards.pro
#
# Untracked files:
#   (use "git add <file>..." to include in what will be committed)
#
#	Makefile
#	build-stamp
#	debian/files
#	debian/ppcards.substvars
#	debian/ppcards/
#	main.o
#	mainwindow.o
#	moc_mainwindow.cpp
#	moc_mainwindow.o
#	moc_numberwindow.cpp
#	moc_numberwindow.o
#	numberwindow.o
#	ppcards
#	qrc_ppcards.cpp
#	qrc_ppcards.o
#	ui_mainwindow.h
