Docs: clarified and expanded continuous deployment overview and integ…

[Vedavyasa21]

Improved clarity and structure of the Continuous Documentation Deployment section.

Changes Made

• Rewrote the introduction for better readability and accuracy.
• Added a clear step-by-step explanation of how webhooks trigger builds.
• Expanded sections on Documentation-as-Code and Automated Versioning.
• Added troubleshooting and verification instructions.
• Updated references to current integration documentation.

Motivation
The previous version lacked clarity on integration behavior and troubleshooting steps.
This update improves understanding for new contributors and users setting up CI/CD documentation workflows.

Type of change

• Documentation improvement