Update README.md

README.md

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 ## Model description
 
-This model is a fine-tuned version of [google/vit-base-patch16-224-in21k](https://huggingface.co/google/vit-base-patch16-224-in21k) on the [Lokier & Al Junaibi (2016)](https://onlinelibrary.wiley.com/doi/10.1111/sed.12293) data S1. The model captures the expertise of 177 volunteers from 33 countries with 3270 years of academic & industry experience in classifying 14 carbonates thin section samples by using the classical Dunham (1962) carbonate classification. In the original paper, the authors intended to objectively analyze whether these volunteers have the same standards in applying Dunham classification.
+This model is a fine-tuned version of [google/vit-base-patch16-224-in21k](https://huggingface.co/google/vit-base-patch16-224-in21k) on the [Lokier & Al Junaibi (2016)](https://onlinelibrary.wiley.com/doi/10.1111/sed.12293) data S1. 
+The model captures the expertise of 177 volunteers from 33 countries with 3270 years of academic & industry experience in classifying 14 carbonates thin section samples by using the classical [Dunham (1962)](https://en.wikipedia.org/wiki/Dunham_classification) carbonate classification. 
+In the original paper, the authors intended to objectively analyze whether these volunteers have the same standards in applying Dunham classification.
 
 ## Intended uses & limitations