Convert dataset sizes from base 2 to base 10 in the dataset card

Convert dataset sizes from base 2 (MiB) to base 10 (MB) in the dataset card, as it is the case in the dataset viewer.
See: https://github.com/huggingface/datasets/issues/5708

README.md

@@ -92,8 +92,8 @@ en
 
 ### Data Instances
 
-- **Size of downloaded dataset files:** 34.76 MB
-- **Size of generated dataset files:** 97.64 MB
+- **Size of downloaded dataset files:** 36.45 MB
+- **Size of the generated dataset:** 102.38 MB
 - **Total size:** 132.40 MB
 
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