Update README.md

README.md

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 ### Dataset Summary
 
-This dataset contains text extracted at the article level from historic digitised newspapers from the [Heritage Made Digital](https://bl.iro.bl.uk/collections/9a6a4cdd-2bfe-47bb-8c14-c0a5d100501f?locale=en) newspaper digitisation program at the [British Library](https://www.bl.uk/). The newspapers in the dataset were published between 1800 and 1896. This dataset contains 2,500,542,682 tokens and 3,065,408 articles. 
+This dataset contains text extracted at the article level from historic digitised newspapers from the [Heritage Made Digital](https://bl.iro.bl.uk/collections/9a6a4cdd-2bfe-47bb-8c14-c0a5d100501f?locale=en) newspaper digitisation program at the [British Library](https://www.bl.uk/). The newspapers in the dataset were published between 1800 and 1896. This dataset contains ~2.5 billion tokens and 3,065,408 articles. 
 
 The dataset contains text generated from Optical Character Recognition software on digitised newspaper pages. This dataset includes the plain text from the OCR alongside some minimal metadata associated with the newspaper from which the text is derived and OCR confidence score information generated from the OCR software.