Fix Transifex resource slug in documentation.
Fix Transifex resource slug in documentation.

The slug of the "calcurse.pot" resource has been changed from
"calcurse-pot" to "calcursepot" for consistency reasons. Update the
documentation where necessary.

Signed-off-by: Lukas Fleischer <af90e31281d8305af43dc616c5aaca3c7165f8a7@cryptocrack.de>

lfos/calcurse,dunecn/calcurse,lfos/calcurse,dunecn/calcurse,lfos/calcurse