Fix Bug 444776 - wildcard misspelled in message as 'wildard'

Fix the misspelled wildcard in MqttTopic.java and messages.properties file.

Bug: 444776
Signed-off-by: bzhangxmt <zhbinbj@cn.ibm.com>

Author: bzhangxmt

org.eclipse.paho.client.mqttv3/src/main/java/org/eclipse/paho/client/mqttv3/MqttTopic.java

@@ -200,7 +200,7 @@ public static void validate(String topicString, boolean wildcardAllowed) {
 		// *******************************************************************************
 		if (Strings.containsAny(topicString, TOPIC_WILDCARDS)) {
 			throw new IllegalArgumentException(
-					"The topic name MUST NOT contain any wildard characters (#+)");
+					"The topic name MUST NOT contain any wildcard characters (#+)");
 		}
 	}
 

org.eclipse.paho.ui/org.eclipse.paho.ui.core/src/org/eclipse/paho/mqtt/ui/nls/messages.properties

@@ -50,7 +50,7 @@ VALIDATION_INVALID_NUM=Current input {0} is not valid integer!
 VALIDATION_INVALID_TOPIC_LEN=A topic string length must be in range [{0}-{1}]
 VALIDATION_TOPIC_MULTI_LEVEL_WILDCARD=Invalid usage of multi-level wildcard in topic string: {0}
 VALIDATION_TOPIC_SINGLE_LEVEL_WILDCARD=Invalid usage of single-level wildcard in topic string: {0}
-VALIDATION_TOPIC_WILDCARDS_NOT_ALLOWED=The publish topic must not contain any wildard characters ({0}).
+VALIDATION_TOPIC_WILDCARDS_NOT_ALLOWED=The publish topic must not contain any wildcard characters ({0}).
 
 #Nav tree
 NAV_TREE_TITLE=MQTT Connections