[ISSUE #631] Enhancements to Quick Start Documentation for New Users

[oriana19993926782]

What does this PR do?
This PR introduces a new section called "Some Tips" to the Quick Start documentation of RocketMQ. The aim is to address and provide solutions to common issues new users might face while setting up RocketMQ for the first time. These enhancements are based on personal experiences and solutions found after encountering these issues firsthand.

How does it address the issues?

• SLF4J Dependency Error: Adds a note about potential errors related to SLF4J dependencies not being found or SLF4J not having a logging implementation, along with suggested fixes.
• Broker's Disk is Full: Explains why users might encounter a "broker's disk is full" error despite having sufficient disk space and provides steps to check and free up disk space on macOS.
• Lock Failed, MQ Already Started: Offers guidance on what to do if the user encounters a lock file issue, preventing the broker from starting. It includes instructions for identifying and safely removing the lock file.

Why is this change necessary?
New users of RocketMQ frequently encounter these issues, which can hinder their progress and affect their initial experience with RocketMQ. By providing these additional tips, we aim to smooth the setup process for newcomers, ensuring they have a better onboarding experience and reducing the likelihood of frustration. This documentation enhancement is not only a reflection of community-driven development but also an effort to build a more welcoming environment for new users.

Verification
The added documentation tips are based on real issues encountered during the setup of RocketMQ and validated through personal testing and community feedback. These additions do not alter the functionality of RocketMQ but provide crucial information that complements the existing Quick Start guide.