make it a sentence

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@1028816 13f79535-47bb-0310-9956-ffa450edef68

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

@@ -1332,7 +1332,7 @@ public class Zip extends MatchingTask {
                 }
             }
 
-            // either we there are non-fileset resources or we
+            // either there are non-fileset resources or we
             // (re-)create the archive anyway
             return new ArchiveState(needsUpdate, initialResources);
         }