doccheck reports:

build/linux-x86_64-server-release/images/docs/api/jdk.jfr/jdk/jfr/package-summary.html:171:2: Warning: trimming empty <p>

build/linux-x86_64-server-release/images/docs/api/jdk.management.jfr/jdk/management/jfr/FlightRecorderMXBean.html:984:2: Warning: trimming empty <p>

The first is caused by <p> before <table>:
open/src/jdk.jfr/share/classes/jdk/jfr/package-info.java:108

 * <b>Predefined settings</b>
 * <p>
 * <table class="striped">

The second is caused by <p> before </div> in the generated file, caused by <p> at the end of a description, and before @param in the source file:
open/src/jdk.management.jfr/share/classes/jdk/management/jfr/FlightRecorderMXBean.java:520:


     * A list of available event names is retrieved by invoking
     * {@link jdk.jfr.FlightRecorder#getEventTypes()} and
     * {@link jdk.jfr.EventType#getName()}. A list of available settings for an
     * event type is obtained by invoking
     * {@link jdk.jfr.EventType#getSettingDescriptors()} and
     * {@link jdk.jfr.ValueDescriptor#getName()}.
     * <p>
     *
     * @param recordingId ID of the recording