Fixes colab links for lightning in 2steps documentation (#9038)
Fixes colab links for lightning in 2steps documentation (#9038)

Co-authored-by: Ethan Harris <a25a9ea3f4ff4cf42f197ba7b17ffb6f34e06e08@soton.ac.uk>
Co-authored-by: Rohit Gupta <cb3c4569854e7764e66b4cfd98eab60a0e5fb067@gmail.com>
williamFalcon/pytorch-lightning,williamFalcon/pytorch-lightning