Modifies doc notebooks for Cloud API

[RodolfoFerro]

Solves first 2 items in checklist from https://github.com/ploomber/pcloud-backend/issues/157

Important notes

• The cloud-notebook-simple plot example has been modified to have a more exciting example (keeping it simple).
• The bash_kernel instructions have been removed since we're considering that users will copy and paste commands to follow these guides.
• Adding the process to create a raw cell in the FAQ and Glossary section is missing, since this should be added directly to Ploomber docs.
• The curl command has been added considering notebooks are hosted in the master branch (so the links won't work if the PR is not merged). For testing purposes, simply change master to notebook-api in the corresponding URLs.
• In the cloud-notebook-parametrized example, the "Notebook artifacts" section does not provide any details for documentation, so no details are provided.

[edublancas]

i see some tests are failing. It's due to the new Python 3.11 release. I fixed this in the master branch, please rebase

[RodolfoFerro]

I've rebased and hidden the conda cell at the beginning.