pretty persistent typo

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@796192 13f79535-47bb-0310-9956-ffa450edef68

WHATSNEW

@@ -784,7 +784,7 @@ Other changes:
    different executable.
    Bugzilla Report 42132.
 
- * <javac>, <rmic>, <javah> and <native2ascci> now provide a nested
+ * <javac>, <rmic>, <javah> and <native2ascii> now provide a nested
    element to specify a classpath that will be used when loading the
    task's (compiler) adapter class.
    Bugzilla Issue 11143.