Some fixes and updates to run-colab guide (openai#2009)

Co-authored-by: vb <vaibhavs10@gmail.com>
Co-authored-by: lewtun <lewis.c.tunstall@gmail.com>
Co-authored-by: Alvaro Bartolome <36760800+alvarobartt@users.noreply.github.com>
Co-authored-by: sergiopaniego <sergiopaniegoblanco@gmail.com>

Author: 5 people