Update custom_llm.py

custom_llm.py

@@ -153,7 +153,12 @@ def out_format(text, llm, df):
     Error Message : {err}
 
 
+    Always change the corresponding columns into datetime format with parameter day_first=True, example:
+    df['column_name'] = pd.to_datetime(df['column_name'], day_first=True)
+    
     
+    Always use idxmin or idxmax instead of array indicies whenever it is possible 
+
     
     The output must follow the following example format:
     ```python