Docs: Improve various globals documentation, as per documentation standards.

Props upadalavipul, mukesh27, krupalpanchal, jigar-bhanushali.
See #57069, #56792.


git-svn-id: https://develop.svn.wordpress.org/trunk@54867 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/class-wp-term-query.php

@@ -910,8 +910,6 @@ class WP_Term_Query {
 	 *
 	 * @since 4.6.0
 	 *
-	 * @global wpdb $wpdb WordPress database abstraction object.
-	 *
 	 * @param string $orderby_raw Alias for the field to order by.
 	 * @return string|false Value to used in the ORDER clause. False otherwise.
 	 */