docs: Add link to license

README.md

@@ -28,7 +28,9 @@ being a modified version of WIT where they have removed the images with empty
 than 10% of the image surface, along with inappropriate images that are candidate for
 deletion. This dataset is the Danish portion of the WIT-Base dataset, consisting of
 roughly 160,000 images with associated Danish descriptions. We release the dataset
-under the CC BY-SA 4.0 license, in accordance with WIT-Base's identical license.
+under the [CC BY-SA 4.0 license](https://creativecommons.org/licenses/by-sa/4.0/), in
+accordance with WIT-Base's [identical
+license](https://huggingface.co/datasets/wikimedia/wit_base#licensing-information).
 
 
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