fix sign format

main.py

@@ -143,7 +143,7 @@ def _sign_text(text, m: Message, limit):
     sign = ''
     if text.startswith('!sign') or text.startswith('/sign'):
         text = text[5:]
-        sign = f'\n\n — <a href="tg://user?id={m.from_user.id}">{escape(m.from_user.full_name)}</a>'
+        sign = f'\n\n— <a href="tg://user?id={m.from_user.id}">{escape(m.from_user.full_name)}</a>'
 
     return text[:limit - len(sign)] + sign