Fix comments so jsdoc can parse

diff --git a/css/game.css b/css/game.css
index e08ea74..9e760f5 100644
--- a/css/game.css
+++ b/css/game.css
@@ -14,7 +14,8 @@
  * @link https://www.frise.org/
  * @copyright 2022 - 2023
  */
-// make sure game tags we don't want to display, we don't display
+/* make sure game tags we don't want to display, we don't display
+ */
 x-game,
 x-action
 {
diff --git a/js/game.js b/js/game.js
index a6be9e4..50d7911 100644
--- a/js/game.js
+++ b/js/game.js
@@ -9,7 +9,7 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  *
- * @file The JS code used to manage a game
+ * @file The JS code used to manage a FRISE game
  * @author Chris Pollett
  * @link https://www.frise.org/
  * @copyright 2022 - 2023
@@ -217,7 +217,7 @@ var object_counter = 0;
  * }
  * @param {Element} DOMElement to be convert into a FRISE game Object or
  *  Location
- * @return {Object?|Location?} the resulting FRISE game Object or Location or
+ * @return {Object} the resulting FRISE game Object or Location or
  *  null if the tagName of the DOMElement didn't begin with x-
  */
 function makeGameObject(dom_object)