Inline documentation for the 'plugin_install_details_link' hook added in [29047] should use a 3-digit, x.x.x-style `@since` version.

See #28885.

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git-svn-id: http://core.svn.wordpress.org/trunk@28936 1a063a9b-81f0-0310-95a4-ce76da25c4cd