Docs: Replace @see with @link for URL in WP_REST_Global_Styles_Controller

[huzaifaalmesbah]

This PR replaces an @see tag with @link in WP_REST_Global_Styles_Controller to align with WordPress PHP Inline Documentation Standards.

Tickets:
Trac Ticket #64224
Originally discussed in Gutenberg PR #74961

Changes:
Replaced @see with @link for the HTML specification URL.

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Props huzaifaalmesbah, shailu25.

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[github-actions]

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[shail-mehta]

LGTM 👍

Thanks for the PR @huzaifaalmesbah

[SergeyBiryukov]

Thanks for the PR! Merged in r61557.