Improve example in index.js for constants/uint8 namespace(prince-patel23)

[prince-patel23]

This pull request addresses RFC #1565 by enhancing the example code in the
index.js file located in the @stdlib/constants/uint8/examples directory.
The updated code improves the demonstration of the uint8 constants available
within the constants/uint8 namespace package.

Changes Made:

• Improved the example code to showcase the available uint8 constants
• Updated comments and header information to reflect current year
• Ensured adherence to project conventions and licensing

Please review and merge as appropriate. Thank you!

[stdlib-bot]

Thank you for working on this pull request. However, we cannot accept your contribution as this pull request does not follow project conventions.

We place a high value on consistency throughout the stdlib codebase, and this pull request was found to significantly deviate from stdlib conventions. We encourage you to closely examine other packages in stdlib and attempt to emulate the practices and conventions found therein.

• If you are attempting to contribute a new package, sometimes the best approach is to simply copy the contents of an existing package and then modify the minimum amount necessary to implement the feature (e.g., changing descriptions, parameter names, and implementation).
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In short, the more effort you put in to ensure that your contribution looks and feels like stdlib—including variables names, bracket spacing, line breaks, etc—the more likely that your contribution will be reviewed and ultimately accepted. We encourage you to closely study the codebase before continuing to work on this pull request.

Thank you again for your interest in stdlib, and we look forward to reviewing your future contributions.