Update sample code

README.md

@@ -68,7 +68,7 @@ Then `cd SBI-16-3D` and start python like:
 ```python
 from datasets import load_dataset
 import numpy
-dataset = load_dataset("./SBI-16-3D.py", "tiny", data_dir="./data/", streaming=True, trust_remote_code=True)
+dataset = load_dataset("./SBI-16-3D.py", "tiny", data_dir="./data/", writer_batch_size=1, trust_remote_code=True)
 ds = dataset.with_format("np", dtype=numpy.uint16)
 ```
 
@@ -102,7 +102,7 @@ Then in your python script:
 ```python
 from datasets import load_dataset
 import numpy
-dataset = load_dataset("AstroCompress/SBI-16-3D", "tiny", streaming=True, trust_remote_code=True)
+dataset = load_dataset("AstroCompress/SBI-16-3D", "tiny", writer_batch_size=1, trust_remote_code=True)
 ds = dataset.with_format("np", columns=["image"], dtype=numpy.uint16)
 
 # or torch