Update README.md

This BlockTowers dataset contains the coordinates for randomly generated "BlockTowers" - stacks of 3,4,5, or 6 cubes. The towers are constructed so they have a 50/50 chance of falling, with 5000 stable, and 5000 unstable towers for each stack size.

README.md

@@ -71,4 +71,4 @@ configs:
     path: data/stack6_stable-*
   - split: stack6_unstable
     path: data/stack6_unstable-*
----
+---