Correction of the example for p4label task to match attributes

PR: 30299
Submitted by: Tim Clemons timc at messagegate dot com


git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@276719 13f79535-47bb-0310-9956-ffa450edef68

docs/manual/OptionalTasks/perforce.html

@@ -420,7 +420,7 @@ is not the latest any more.
 	name="NightlyBuild:${DSTAMP}:${TSTAMP}" 
 	desc="Auto Nightly Build"
 	lock="locked"
-	label="//firstdepot/...;//secondepot/foo/bar/..."
+	view="//firstdepot/...;//secondepot/foo/bar/..."
 />
 </pre>
 <hr>