[dajiaohuang]

Summary

Fixes #92.

The fluent builder adds one backslash path separator, but the README passes a verbatim C# string containing two backslashes to IsMatch. The example therefore returns false, contrary to its comment.

Use a single backslash in both the displayed glob pattern and the verbatim subject string. No runtime behavior changes.

Validation

• Reproduced the original example returning false against current develop source.
• Confirmed the corrected example returns true and glob.ToString() equals the corrected displayed pattern.
• Ran a bounded public-API probe against current source: 89 checks passed covering README matching/escaping, string/span, fluent construction, formatting, options, and match/nonmatch generation.
• CRLF-aware whitespace check passed.

The probe used .NET 10 with SPAN enabled and isolated local configuration/cache paths; the repository's pinned .NET 8 SDK is not installed here. The full upstream test suite, legacy target frameworks and benchmarks were not run. This is a documentation-only change.