docs: update README.md of examples-clang-format

[lumirlumir]

This pull request includes updates to the examples/clang-format/README.md file to improve clarity and provide more comprehensive instructions for running the example. The most important changes include renaming the example, restructuring the instructions, and expanding the list of commands.

Improvements to documentation:

• Renamed the example from clang-format to examples-clang-format for consistency.
• Restructured the instructions by adding a "Getting Started" section and separating the methods for running the example into "Run from the Root" and "Navigate to the Directory and Run" sections.
• Expanded the list of available commands to include all variations of formatted and unformatted commands for both C and C++ languages.

[github-actions]

Labels have been automatically applied based on the conventional commit types.🏷️

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (fcf1129) to head (efbe6c2).
Report is 1 commits behind head on main.

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  Hits           416       416           

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