Adjust sample code to be compatible with Ant < 1.7
diff --git a/org.jacoco.doc/docroot/doc/ant.html b/org.jacoco.doc/docroot/doc/ant.html
index 8449c49..a9b4eb9 100644
--- a/org.jacoco.doc/docroot/doc/ant.html
+++ b/org.jacoco.doc/docroot/doc/ant.html
@@ -28,7 +28,7 @@
<span class="nr"> 2</span>
<span class="nr"> 3</span> <taskdef uri="antlib:org.jacoco.ant" resource="org/jacoco/ant/antlib.xml">
<span class="nr"> 4</span> <classpath>
-<span class="nr"> 5</span> <file file="<i>path_to_jacoco</i>/lib/jacocoant.jar"/>
+<span class="nr"> 5</span> <pathelement location="<i>path_to_jacoco</i>/lib/jacocoant.jar"/>
<span class="nr"> 6</span> </classpath>
<span class="nr"> 7</span> </taskdef>
<span class="nr"> 8</span>