add 66-execl on the documentation

doc/index.html

@@ -87,6 +87,12 @@
 		<li><a href="66-start.html"><tt>66-start</tt></a></li>
 		<li><a href="66-stop.html"><tt>66-stop</tt></a></li>
 	</ul>
+	
+	<h3> Inner tools </h3>
+	
+	<ul>
+		<li><a href="66-execl.html"><tt>66-execl</tt></a></li>
+	</ul>
 
 <h2> Why is 66 necessary? </h2>