Regarding some unavailable resource

[Krushna-Prasad-Sahoo]

Hi @aceisScope , thanks for such a nice resource for GCP ACE exam. I found Google Cloud Pub/Sub, Dataflow, Dataproc, Datalab and Marketplace information is not available. It would be great if you can add those.
Also I would like to contribute to this repo if you agree.

Regards,
Krushna

[aceisScope]

Hi, feel free to open Pull Requests :) I don't even remember why they were left blank but I can add content to those empty sections later.