Add dependency description

manual/install.html

@@ -787,7 +787,9 @@ these tasks available. Please refer to the <a href="#optionalTasks">Installing A
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     <td>junit.jar</td>
-    <td><a href="Tasks/junit.html">junit</a> task (may be in classpath passed to task rather than Ant's classpath)</td>
+    <td><a href="Tasks/junit.html">junit</a> task (may be in classpath passed to task rather than
+      Ant's classpath) and <td><a href="Tasks/junitlauncher.html">junitlauncher</a> task (must be on
+      Ant's classpath)</td>
     <td><a href="https://junit.org/" target="_top">https://junit.org/</a></td>
   </tr>
   <tr>