fixed typo.

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@267910 13f79535-47bb-0310-9956-ffa450edef68

src/main/org/apache/tools/ant/taskdefs/Java.java

@@ -190,8 +190,8 @@ public class Java extends Task {
      * Set the command line arguments for the JVM.
      */
     public void setJvmargs(String s) {
-        log("The args attribute is deprecated. " +
-            "Please use nested arg elements.",
+        log("The jvmargs attribute is deprecated. " +
+            "Please use nested jvmarg elements.",
             Project.MSG_WARN);
         cmdl.createVmArgument().setLine(s);
     }