Fix description links in dataset cards (#4222)

Commit from https://github.com/huggingface/datasets/commit/ef826e75315f1e35ca478c0bcfad20b566c7b5cb

README.md

@@ -49,9 +49,9 @@ pretty_name: Grail QA
 
 ## Dataset Description
 
-- **Homepage: [Grail QA](https://dki-lab.github.io/GrailQA/)**
+- **Homepage:** [Grail QA](https://dki-lab.github.io/GrailQA/)
 - **Repository:**
-- **Paper:[GrailQA paper (Gu et al. '20)](https://arxiv.org/abs/2011.07743)**
+- **Paper:** [GrailQA paper (Gu et al. '20)](https://arxiv.org/abs/2011.07743)
 - **Leaderboard:**
 - **Point of Contact:**