fix: allow chinese names as pair names

Author: xmatthias

freqtrade/plugins/pairlist/pairlist_helpers.py

@@ -28,7 +28,7 @@ def expand_pairlist(
                 raise ValueError(f"Wildcard error in {pair_wc}, {err}")
 
         # Remove wildcard pairs that didn't have a match.
-        result = [element for element in result if re.fullmatch(r"^[A-Za-z0-9:/-]+$", element)]
+        result = [element for element in result if re.fullmatch(r"^[\w:/-]+$", element)]
 
     else:
         for pair_wc in wildcardpl: