docs(guides/typography): update recommended font url

[magneticflux-]

Update the Google Fonts URL to include display=swap which is now recommended. This improves font loading performance and fixes a Google Lighthouse Audit warning.

Fixes #17697

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[magneticflux-]

@googlebot I signed it!

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[crisbeto]

LGTM

[jelbourn]

LGTM

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