Fixed punctuation errors in code in README

README.md

@@ -124,7 +124,7 @@ res = model.chat(
     msgs=msgs,
     tokenizer=tokenizer,
     sampling=True, # if sampling=False, beam_search will be used by default
-    temperature=0.7，
+    temperature=0.7,
     # system_prompt='' # pass system_prompt if needed
 )
 print(res)