Update attachCustomWheelEventHandler comments

typings/xterm.d.ts

@@ -1014,15 +1014,15 @@ declare module '@xterm/xterm' {
      * Attaches a custom wheel event handler which is run before keys are
      * processed, giving consumers of xterm.js control over whether to proceed
      * or cancel terminal wheel events.
-     * @param customMouseEventHandler The custom WheelEvent handler to attach.
+     * @param customWheelEventHandler The custom WheelEvent handler to attach.
      * This is a function that takes a WheelEvent, allowing consumers to stop
      * propagation and/or prevent the default action. The function returns
      * whether the event should be processed by xterm.js.
      *
      * @example A handler that prevents all wheel events while ctrl is held from
      * being processed.
      * ```ts
-     * term.attachCustomKeyEventHandler(ev => {
+     * term.attachCustomWheelEventHandler(ev => {
      *   if (ev.ctrlKey) {
      *     return false;
      *   }