Apply suggestions from code review

Author: SgtSilvio

src/main/java/com/hivemq/client/mqtt/mqtt5/message/connect/connack/Mqtt5ConnAckReasonCode.java

@@ -43,7 +43,7 @@ public enum Mqtt5ConnAckReasonCode implements Mqtt5ReasonCode {
      */
     MALFORMED_PACKET(MqttCommonReasonCode.MALFORMED_PACKET),
     /**
-     * The CONNECT contained data that is not allowed by the MQTT protocol.
+     * The CONNECT packet contained data that is not allowed by the MQTT protocol.
      */
     PROTOCOL_ERROR(MqttCommonReasonCode.PROTOCOL_ERROR),
     /**

src/main/java/com/hivemq/client/mqtt/mqtt5/message/publish/pubcomp/Mqtt5PubCompReasonCode.java

@@ -31,7 +31,7 @@
 public enum Mqtt5PubCompReasonCode implements Mqtt5ReasonCode {
 
     /**
-     * Packet identifier released. Publication of QoS 2 message is complete.
+     * Packet identifier released. Publication of the QoS 2 message is complete.
      */
     SUCCESS(MqttCommonReasonCode.SUCCESS),
     /**