Fix @SInCE in previous commit

Author: garyrussell

spring-kafka-test/src/main/java/org/springframework/kafka/test/EmbeddedKafkaBroker.java

@@ -263,7 +263,7 @@ public void setZkPort(int zkPort) {
 	 * Set connection timeout for the client to the embedded Zookeeper.
 	 * @param zkConnectionTimeout the connection timeout,
 	 * @return the {@link EmbeddedKafkaBroker}.
-	 * @since 2.4
+	 * @since 2.3.6
 	 */
 	public EmbeddedKafkaBroker zkConnectionTimeout(int zkConnectionTimeout) {
 		this.zkConnectionTimeout = zkConnectionTimeout;
@@ -274,7 +274,7 @@ public EmbeddedKafkaBroker zkConnectionTimeout(int zkConnectionTimeout) {
 	 * Set session timeout for the client to the embedded Zookeeper.
 	 * @param zkSessionTimeout the session timeout.
 	 * @return the {@link EmbeddedKafkaBroker}.
-	 * @since 2.4
+	 * @since 2.3.6
 	 */
 	public EmbeddedKafkaBroker zkSessionTimeout(int zkSessionTimeout) {
 		this.zkSessionTimeout = zkSessionTimeout;