Incorrect type in docblock for `translations_api` and `translations_api_result` hooks

[volodymyrkolesnykov]

translation_api and translation_api_result filters are incorrectly marked as taking object as their first argument (​https://github.com/WordPress/WordPress/blob/5.9/wp-admin/includes/translation-install.php#L32, ​https://github.com/WordPress/WordPress/blob/5.9/wp-admin/includes/translation-install.php#L105).

The correct type should be array (​https://github.com/WordPress/WordPress/blob/5.9/wp-admin/includes/translation-install.php#L85), as json_decode() is asked to return an associative array; moreover, the code checks that the result is an array (​https://github.com/WordPress/WordPress/blob/5.9/wp-admin/includes/translation-install.php#L86), and consumers of translations_api() also expect to see an array (​https://github.com/WordPress/WordPress/blob/5.9/wp-admin/includes/translation-install.php#L135).

This PR fixes parameter/return value types for the translations_api() function and translations_api and translations_api_result hooks from object to array.

Trac ticket: [](https://core.trac.wordpress.org/ticket/54959)

[audrasjb]

In 52645:

Docs: Fix incorrect type in translations_api and translations_api_result docblocks.

Before this changeset, translation_api and translation_api_result filters were incorrectly marked as taking object as their first argument. The correct type is an array as json_decode() is asked to return an associative array.

Props volodymyrkolesnykov.
Fixes #54959.

committed in https://core.trac.wordpress.org/changeset/52645, thanks!

Sorry for this question but how can someone from https://core.trac.wordpress.org/changeset/52645 discover the original author (that is @sjinks and not @audrasjb)? Just for my curiosity.

@valerio-bozzolan "props volodymyrkolesnykov" in the commit message 🙂