Sergey Biryukov bea55db921 Docs: Add missing @return tag to Language_Pack_Upgrader::check_package().
Synchronize documentation of the `::check_package()` method between `Plugin_Upgrader`, `Theme_Upgrader`, and `Language_Pack_Upgrader`.

Props ankitmaru, mukesh27, desrosj.
Fixes #51448.
Built from https://develop.svn.wordpress.org/trunk@49091


git-svn-id: http://core.svn.wordpress.org/trunk@48853 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2020-10-05 13:44:11 +00:00
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