docs: update browser CDN URL to v11.0.16

[avoidwork]

Summary

• Update Browser Usage CDN URL from to
• Change bundle from to

Fixes #261

[augmentcode]

🤖 Augment PR Summary

Summary: Updates the README’s Browser Usage snippet to pin the jsDelivr CDN URL to filesize@11.0.16 (fixing #261).

Changes:

• Replaces the previous @11 UMD-minified CDN URL with a version-specific @11.0.16 URL pointing at dist/filesize.js.

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