Apply suggestion from code review

Co-authored-by: Juliette <663378+jrfnl@users.noreply.github.com>

Author: rodrigoprimo

WordPress/Tests/DB/PreparedSQLPlaceholdersUnitTest.inc

@@ -530,5 +530,5 @@ $sql = \wpdb::prepare( "SELECT * FROM $wpdb->users WHERE id = %d AND user_login
 $sql = \WPDB::prepare( "SELECT * FROM $wpdb->users WHERE id = %d AND user_login = %s" ); // Error.
 $sql = MyNamespace\wpdb::prepare( "SELECT * FROM $wpdb->users WHERE id = %d AND user_login = %s" ); // OK.
 $sql = \MyNamespace\WPDB::prepare( "SELECT * FROM $wpdb->users WHERE id = %d AND user_login = %s" ); // OK.
-$sql = namespace\wpdb::prepare( "SELECT * FROM $wpdb->users WHERE id = %d AND user_login = %s" ); // Ok. The sniff should start flagging this once it can resolve relative namespaces.
+$sql = namespace\wpdb::prepare( "SELECT * FROM $wpdb->users WHERE id = %d AND user_login = %s" ); // Ok. The sniff should start flagging this once it can resolve relative namespaces as this test file is not namespaced.
 $sql = namespace\Sub\wpdb::prepare( "SELECT * FROM $wpdb->users WHERE id = %d AND user_login = %s" ); // OK.

WordPress/Tests/DB/PreparedSQLUnitTest.1.inc

@@ -155,5 +155,5 @@ $wpdb->{$methodName}('query');
 \WPDB::prepare( "SELECT * FROM $wpdb->posts WHERE post_title LIKE '" . foo() . "';" ); // Bad.
 MyNamespace\wpdb::prepare( "SELECT * FROM $wpdb->posts WHERE post_title LIKE '" . foo() . "';" ); // Ok.
 \MyNamespace\WPDB::prepare( "SELECT * FROM $wpdb->posts WHERE post_title LIKE '" . foo() . "';" ); // Ok.
-namespace\wpdb::prepare( "SELECT * FROM $wpdb->posts WHERE post_title LIKE '" . foo() . "';" ); // Ok. The sniff should start flagging this once it can resolve relative namespaces.
+namespace\wpdb::prepare( "SELECT * FROM $wpdb->posts WHERE post_title LIKE '" . foo() . "';" ); // Ok. The sniff should start flagging this once it can resolve relative namespaces as this test file is not namespaced.
 namespace\Sub\wpdb::prepare( "SELECT * FROM $wpdb->posts WHERE post_title LIKE '" . foo() . "';" ); // Ok.