Wordpress. Function for remove archive prefix from archive title. Remove “Category:”, “Tag:”, “Author:” from the_archive_title.

functions.php

function remove_category_prefix_from_archive_title( $title ) {
	if ( is_category() ) {
            $title = single_cat_title( '', false );

        } elseif ( is_tag() ) {
            $title = single_tag_title( '', false );

        } elseif ( is_author() ) {
            $title = '<span class="vcard">' . get_the_author() . '</span>' ;
        }

    return $title;
}
add_filter( 'get_the_archive_title', 'remove_category_prefix_from_archive_title' );