Fix help message

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/net/trunk@1812648 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/main/java/org/apache/commons/net/examples/mail/SMTPMail.java b/src/main/java/org/apache/commons/net/examples/mail/SMTPMail.java
index eb9702a..ccbfb06 100644
--- a/src/main/java/org/apache/commons/net/examples/mail/SMTPMail.java
+++ b/src/main/java/org/apache/commons/net/examples/mail/SMTPMail.java
@@ -54,7 +54,7 @@
 
         if (args.length < 1)
         {
-            System.err.println("Usage: mail smtpserver");
+            System.err.println("Usage: SMTPMail <smtpserver>");
             System.exit(1);
         }