Update README.md

README.md

@@ -13,4 +13,4 @@ Some of its contributions are:
 
 - the [Nanotron library](https://github.com/huggingface/nanotron)
 - the [Picotron library](https://github.com/huggingface/picotron)
-- the [Ultrascale-Playbook](https://huggingface.co/spaces/nanotron/ultrascale-playbook), a comprehensive book covering all techniques that can be used to efficiently train models at the largest scales []
+- the [Ultrascale-Playbook](https://huggingface.co/spaces/nanotron/ultrascale-playbook), a comprehensive book covering all distributed/parallelisation and low-level techniques that can be used to efficiently train models at the largest scales.