Add dataset link in README

README.md

@@ -14,7 +14,7 @@ should probably proofread and complete it, then remove this comment. -->
 
 # flan-t5-base-tldr-100k
 
-This model is a fine-tuned version of [google/flan-t5-base](https://huggingface.co/google/flan-t5-base) on the None dataset.
+This model is a fine-tuned version of [google/flan-t5-base](https://huggingface.co/google/flan-t5-base) on the first 100.000 samples of the [Reddit TL;DR dataset](https://zenodo.org/record/1168855#.ZB8P-iFByUk).
 It achieves the following results on the evaluation set:
 - Loss: 2.7323
 - Rouge1: 17.0772