Add link to DeepSEA supplemental feature table reference

Author: j-funk

docs/deepsea.rst

@@ -15,6 +15,8 @@ DeepSEA is described in the following manuscript:
 
 Jian Zhou, Olga G. Troyanskaya. **Predicting the Effects of Noncoding Variants with Deep learning-based Sequence Model.** Nature Methods (2015).
 
+To refer to the `supplemental feature table <https://s3-us-west-2.amazonaws.com/humanbase-dev/deepsea/examples/41588_2019_420_MOESM9_ESM.csv>`_ which has all the profiles used to train DeepSEA.
+
 Input
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