From ###@###.### :

There is a doc bugin SimpleTimeZone that causes serialized-form.html to be
poorly indented. Here it is:

 /**
     * This field has two possible interpretations:
     * <dl>
     * <dt><code>endMode == DOW_IN_MONTH</code></dt>
     * <dd>
     * <code>endDay</code> indicates the day of the month of
     * <code>endMonth</code> on which daylight
     * saving time ends, from 1 to 28, 30, or 31, depending on the
     * <code>endMonth</code>.
     * </dd>
     * <dt><code>endMode != DOW_IN_MONTH</code></dt>
     * <dd>
     * <code>endDay</code> indicates which <code>endDayOfWeek</code> in th
     * month <code>endMonth</code> daylight
     * saving time ends on. For example, a value of +1 and a
     * <code>endDayOfWeek</code> of <code>Calendar.SUNDAY</code> indicates the
     * first Sunday of <code>endMonth</code>. Likewise, +2 would indicate the
     * second Sunday, and -1 the last Sunday. A value of 0 is illegal.
     * </dd>
     * </ul>
     * <p>If <code>useDaylight</code> is false, this value is ignored.
     * @serial
     */
    private int endDay;

As you can see, the <dl> does not have a matching </dl>.