Updated link to Chaikin's algorithm - access forbidden to the old link.

[Armatorix]

This pull request includes updates to the turf-polygon-smooth package, specifically to update the URL references for Chaikin's algorithm in the documentation and code comments.

related to #2737

Documentation updates:

• packages/turf-polygon-smooth/README.md: Updated the URL reference for Chaikin's algorithm to a new link.

• packages/turf-polygon-smooth/index.ts: Updated the URL reference for Chaikin's algorithm in the code comments to the same new link.

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[smallsaucepan]

Thanks for tidying this up @Armatorix 👍