Update pycatfile.py

Author: Kazuki Suzuki Przyborowski

pycatfile.py

@@ -404,8 +404,8 @@ def _is_printable(ch):
 __use_json_name__ = "catfile.json"
 if(__use_ini_file__ and __use_json_file__):
     __use_json_file__ = False
-if('PYARCHIVEFILE_CONFIG_FILE' in os.environ and os.path.exists(os.environ['PYARCHIVEFILE_CONFIG_FILE']) and __use_env_file__):
-    scriptconf = os.environ['PYARCHIVEFILE_CONFIG_FILE']
+if('PYCATFILE_CONFIG_FILE' in os.environ and os.path.exists(os.environ['PYCATFILE_CONFIG_FILE']) and __use_env_file__):
+    scriptconf = os.environ['PYCATFILE_CONFIG_FILE']
 else:
     prescriptpath = get_importing_script_path()
     if(prescriptpath is not None):