Fix JavaDoc warning; downgrade ASCIIDoc plugin

Author: artembilan

build.gradle

@@ -15,7 +15,7 @@ plugins {
 	id 'project-report'
 	id 'idea'
 	id 'org.sonarqube' version '2.7.1'
-	id 'org.asciidoctor.convert' version '2.3.0'
+	id 'org.asciidoctor.convert' version '1.6.1'
 	id 'org.ajoberstar.grgit' version '3.1.1'
 	id 'io.spring.nohttp' version '0.0.3.RELEASE'
 	id 'io.spring.dependency-management' version '1.0.8.RELEASE' apply false

spring-kafka-test/src/main/java/org/springframework/kafka/test/utils/KafkaTestUtils.java

@@ -174,6 +174,7 @@ public static <K, V> ConsumerRecord<K, V> getSingleRecord(Consumer<K, V> consume
 	 * @param topic the topic.
 	 * @param partition the partition.
 	 * @param seekToLast true to fetch an existing last record, if present.
+	 * @param commit commit offset after polling or not.
 	 * @param timeout the timeout.
 	 * @return the record or null if no record received.
 	 * @since 2.3