Fixes documentation issue #245

[vidit-maheshwari]

Summary

Fixes #245

This pull request aims to improve the documentation for configuring Fedora Messaging by adding a reminder regarding the passive_declares option to be set to true.

Changes Made

• Added a reminder note to the quick-start.rst file emphasizing the importance of setting passive_declares to true in the Fedora Messaging configuration.
• Provided clear instructions for users to locate the config.toml file and set the passive_declares option.

Purpose

By enhancing the documentation with this reminder, we aim to reduce potential issues for users of Fedora's /pubsub vhost who might forget to configure passive_declares. Ensuring that passive_declares is correctly set to true is essential for proper functioning of queues and exchanges in Fedora Messaging.

[vidit-maheshwari]

@abompard Kindly review this new PR, i have run the checks locally and found no issue but don't know why these builds are failing

[abompard]

The RPM and testing-farm builds fail right now, it's a known reason, no worries.