fix gff2fa.py
fix gff2fa.py

zctea/bio_scripts,shenwei356/bio_scripts,shenwei356/bio_scripts,DawnEve/bio_scripts,zctea/bio_scripts,zctea/bio_scripts,DawnEve/bio_scripts,zctea/bio_scripts,DawnEve/bio_scripts,DawnEve/bio_scripts,shenwei356/bio_scripts,zctea/bio_scripts,DawnEve/bio_scripts,shenwei356/bio_scripts