Fix the `wp_count_attachments()` PHPDoc to reflect that it returns an object, not array.

See #25412.

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Convert `wp_editor()` default arguments documentation to a hash notation in the `_WP_Editors::parse_settings()` PHPDoc.

See #27566.

Built from https://develop.svn.wordpress.org/trunk@27808


git-svn-id: http://core.svn.wordpress.org/trunk@27642 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Better description and fixed typo for `_WP_Editors::parse_settings()`.

See [27808]. See #27566.

Built from https://develop.svn.wordpress.org/trunk@27809


git-svn-id: http://core.svn.wordpress.org/trunk@27643 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Wow. One more time with the typos.

I can, in fact, spell 'instance'.

See #27566.

Built from https://develop.svn.wordpress.org/trunk@27810


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