Missing quote in javadoc.

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@277712 13f79535-47bb-0310-9956-ffa450edef68

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

@@ -160,7 +160,7 @@ public class PathConvert extends Task {
 
     /**
      * An enumeration of supported targets:
-     * windows", "unix", "netware", and "os/2".
+     * "windows", "unix", "netware", and "os/2".
      */
     public static class TargetOs extends EnumeratedAttribute {
         /**