updating Q6 in "FAQ.html"

Author: d0vgan

docs/NppExec_Manual/FAQ.html

@@ -135,6 +135,7 @@ <h3>FAQ (Frequently Asked Questions)</h3>
     <pre>cmd /Q</pre>
   </blockquote>
 <p>In this case, <i>cmd.exe</i> will not echo its input commands.</p>
+<p>See also: Using cmd.exe <a href="4.4.html">[4.4]</a>.</p>
 <p>&nbsp;</p>
 
 </BODY>