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

@@ -97,9 +97,9 @@ train-eval-index:
 - **Repository:** [More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
 - **Paper:** [More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
 - **Point of Contact:** [More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
-- **Size of downloaded dataset files:** 158.67 MB
-- **Size of the generated dataset:** 421.28 MB
-- **Total amount of disk used:** 579.95 MB
+- **Size of downloaded dataset files:** 166.38 MB
+- **Size of the generated dataset:** 441.74 MB
+- **Total amount of disk used:** 608.12 MB
 
 ### Dataset Summary
 
@@ -147,9 +147,9 @@ that is "
 
 #### plain_text
 
-- **Size of downloaded dataset files:** 158.67 MB
-- **Size of the generated dataset:** 421.28 MB
-- **Total amount of disk used:** 579.95 MB
+- **Size of downloaded dataset files:** 166.38 MB
+- **Size of the generated dataset:** 441.74 MB
+- **Total amount of disk used:** 608.12 MB
 
 An example of 'train' looks as follows.
 ```