Description

This is a follow-up to #35892, #30406 and https://core.trac.wordpress.org/ticket/54370. Two things discovered:

1. Right now, the site icon block links to /wp-admin/customize.php?autofocus[section]=title_tagline in https://github.com/WordPress/gutenberg/blob/trunk/packages/block-library/src/site-logo/edit.js#L281 . As the Site Icon can now be edited on the general setting screen, that should be linked instead.
2. Everywhere else in core Site Icon is capitalized except for the string in https://github.com/WordPress/gutenberg/blob/trunk/packages/block-library/src/site-logo/edit.js#L334

Step-by-step reproduction instructions

1. Use WordPress

Screenshots, screen recording, code snippet

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Environment info

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Please confirm that you have searched existing issues in the repo.

Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

Yes