Update README.md

README.md

@@ -58,7 +58,7 @@ To use this dataset, you can load it using the Hugging Face datasets library:
 ```python
 from datasets import load_dataset
 
-dataset = load_dataset('ESITime/TempKB')
+dataset = load_dataset('ESITime/TempKB', keep_default_na=False)
 ```
 
 ## License