[egs] Fix location of sequitur installation (kaldi-asr#3017)

Author: jybaek

egs/voxforge/s5/local/voxforge_prepare_dict.sh

@@ -49,7 +49,7 @@ if [[ "$(uname)" == "Darwin" ]]; then
   alias readlink=greadlink
 fi
 
-sequitur=$KALDI_ROOT/tools/sequitur
+sequitur=$KALDI_ROOT/tools/sequitur-g2p
 export PATH=$PATH:$sequitur/bin
 export PYTHONPATH=$PYTHONPATH:`utils/make_absolute.sh $sequitur/lib/python*/site-packages`