[chandula00]

This pull request updates the README.md to clarify and expand the documentation around external data sources and workflows for the website. The main focus is on distinguishing between multiple Google Sheets and Google Forms used for content, and providing a clearer architectural overview.

Key documentation improvements:

Clarification of Data Sources and Workflow:

• Updated references throughout the README from a single "Google Sheet" to "Google Sheets" for publications and social feed data, and added mention of Google Forms for profile and news submissions.

Architecture and Process Explanation:

• Expanded the high-level architecture diagram and description to explicitly show the flow from Google Forms to content repositories via nightly pull requests, and clarified the deployment triggers and data flow.
• Added details about how form responses are processed and when they appear on the live site, providing contributors with a better understanding of the content pipeline.

Contributor Guidance:

• Updated instructions to contributors to reference the correct sources of truth for publications and social feed data, emphasizing the use of Google Sheets and Forms over manual JSON edits.