修复一堆错误

hydro/lib/validator.js

@@ -59,39 +59,31 @@ ID_RE = re.compile(r'[^\\/\s\u3000]([^\\/\n\r]*[^\\/\s\u3000])?')
 def is_id(s):
   return bool(ID_RE.fullmatch(s))
 
-
 def check_category_name(s):
   if not is_id(s):
     raise error.ValidationError('category_name')
 
-
 def check_node_name(s):
   if not is_id(s):
     raise error.ValidationError('node_name')
 
-
 def is_intro(s):
   return isinstance(s, str) and 0 < len(s.strip()) < 500
 
-
 def check_intro(s):
   if not is_intro(s):
     raise error.ValidationError('intro')
 
-
 def is_description(s):
   return isinstance(s, str) and len(s) < 65536
 
-
 def check_description(s):
   if not is_description(s):
     raise error.ValidationError('description')
 
-
 def is_lang(i):
   return i in constant.language.LANG_TEXTS
 
-
 def check_lang(i):
   if not is_lang(i):
     raise error.ValidationError('lang')