fix error for checkpoint retrieval (#5)

- fix error for checkpoint retrieval (38ea626e8ab29cc6f5dd555667f0ec58c69ede30)

excel_chat.py

@@ -236,7 +236,7 @@ def chat_with_mistral(source_cols, dest_col, prompt, excel_file, url, search_col
 
             try:
                 if cpt == checkpoint:
-                    save_name = user['save_name']+".xlsx"
+                    save_name = user['save_name']
                     df.to_excel(save_name, index=False)
                     checkpoint += 50
                     
@@ -247,7 +247,7 @@ def chat_with_mistral(source_cols, dest_col, prompt, excel_file, url, search_col
             # progress((index+1)/len(df),desc=f'Request {index+1}/{len(df)}!')
 
     df.to_excel(file_name, index=False)
-    save_name = user['save_name']+".xlsx"
+    save_name = user['save_name']
     df.to_excel(save_name, index=False)
     
     zip_file_path = 'config_file.zip'