Refine Documentation for ABP Studio and CLI Usage

[waqarkabir]

Text optimization

Description:

This pull request includes the following improvements to the documentation:

• Improved clarity and readability in the "Development Environment Setup" section.
• Updated the "Prerequisites" section for project setup with clearer phrasing and consistent formatting.
• Refined the explanation of ABP Studio usage, noting its beta status and offering the ABP CLI as an alternative.
• Streamlined language to maintain a professional tone and improve user experience.

These changes aim to enhance the overall usability and readability of the documentation for developers.

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