sqapi: fix documentation

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@7034 8aca7d54-2c30-db11-9de9-000461428c89
sqapi: fix documentation

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@7035 8aca7d54-2c30-db11-9de9-000461428c89