fix some comments
fix some comments

pombredanne/lsh-hdc,pombredanne/lsh-hdc,pombredanne/lsh-hdc,escherba/lsh-hdc,pombredanne/lsh-hdc,pombredanne/lsh-hdc,escherba/lsh-hdc,escherba/lsh-hdc,escherba/lsh-hdc,escherba/lsh-hdc