Docs: Add missing `session_token_manager` duplicate hook reference in `wp-includes/class-wp-session-tokens.php`.

Props keesiemeijer.
See #39371.
Built from https://develop.svn.wordpress.org/trunk@39670


git-svn-id: http://core.svn.wordpress.org/trunk@39610 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/class-wp-session-tokens.php

@@ -237,6 +237,7 @@ abstract class WP_Session_Tokens {
 	 * @static
 	 */
 	final public static function destroy_all_for_all_users() {
+		/** This filter is documented in wp-includes/class-wp-session-tokens.php */
 		$manager = apply_filters( 'session_token_manager', 'WP_User_Meta_Session_Tokens' );
 		call_user_func( array( $manager, 'drop_sessions' ) );
 	}

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.8-alpha-39669';
+$wp_version = '4.8-alpha-39670';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.