fix: update examples in README and BigIntCoercion class for accurate values

[jkyberneees]

No description provided.

[Copilot]

Pull Request Overview

This PR fixes documentation inconsistencies by updating examples in both the README.md and BigIntCoercion class to reflect accurate computed values for various string-to-BigInt conversions and character operations.

Key changes:

• Updated numeric examples to show correct computed values
• Corrected Unicode character representations in comments
• Fixed string-to-BigInt conversion examples with accurate results

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
src/bigint-coercion.ts	Updated JSDoc examples to show correct Unicode character and numeric values
README.md	Fixed string-to-BigInt conversion examples with accurate computed values and character representations

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[Copilot]

The comment shows an empty string ('') but should show the actual Unicode character for code point 62976. Consider using String.fromCharCode(62976) to show the correct character or explain why it appears empty.

Suggested change

	* new BigIntCoercion(128512n).toChar(); // '' (wraps to 16 bits: 62976)
	* new BigIntCoercion(128512n).toChar(); // '' (wraps to 16 bits: 62976)