This pull request makes several improvements to the documentation for the Segment Public API, focusing on clarity, accuracy, and inclusivity of SDK support. The changes enhance readability, update terminology, and clarify instructions for users.

Documentation clarity and accuracy:

• Clarified the CRUD acronym in the introduction to explicitly include "update" and improved the description for better readability.
• Updated instructions for creating a Public API token to use consistent bold formatting for roles and UI elements, and clarified the process steps.
• Improved the explanation for including the Public API token in HTTP requests, making it clearer and more concise.
• Changed section titles and references to use consistent capitalization and terminology (e.g., "API token security").

SDK and user guidance updates:

• Added C# to the list of supported languages for Segment's Public API SDKs and corrected the spelling of "JavaScript."

General improvements:

• Improved phrasing for recommendations and FAQ answers to use more inclusive language (e.g., "We recommend...").
• Updated role references and troubleshooting instructions for clarity and accuracy, including links and error explanations.

Proposed changes

Merge timing

• Once approved

Related issues (optional)

DOC-1232