Fix formatting in README.md for dataset links

Author: Theavinash02

README.md

@@ -4,4 +4,4 @@ The licences are included in the respective dataset folders as well.
 
 1. [example-causal-datasets](https://github.com/cmu-phil/example-causal-datasets): CC0 1.0 Universal. Last synced on
    2026-02-05.
-2. [Tuebingen-pair-wise-dataset](https://webdav.tuebingen.mpg.de/cause-effect/): Last downloaded on 2026-03-02
+2. [Tuebingen-pair-wise-dataset](https://webdav.tuebingen.mpg.de/cause-effect/): Last downloaded on 2026-03-02.