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apply_filters( 'plugins_url', string $url, string $path, string $plugin )

Filters the URL to the plugins directory.

$url: (string) The complete URL to the plugins directory including scheme and path.
$path: (string) Path relative to the URL to the plugins directory. Blank string if no path is specified.
$plugin: (string) The plugin file path to be relative to. Blank string if no plugin is specified.

Used By	Description
wp-includes/link-template.php: plugins_url()	Retrieves a URL within the plugins or mu-plugins directory.

Version	Description
2.8.0	Introduced.

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Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/hooks/plugins_url