Manual - File does not exist

Hi
this is a very interesting project Manager!
I have installed on my server and I move my first steps in knwoledge.
When I try to click the icon of help the windows opened but with a 404 error
The apache log say me this


[Wed Dec 18 11:38:38 2013] [error] [client xx.xx.xx.xx] File does not exist: /usr/share/doc/apache2-doc/manual/manual.php, referer: http://mysite/view/main.php

I have the manual in the original position http://mysite/manual

Have I to move the manual in the apache-doc or there is a configuration item to modify?
Thank You

ok
you are right1
In my apache configuration I have under domain.tld/manual the pager of Apache HTTP Server Version 2.2 Documentation that is under the folder /usr/share/doc/apache2-doc/manual/
This Directive is in the /etc/apache2/conf.d/apache2-doc

Alias /manual /usr/share/doc/apache2-doc/manual/

<Directory "/usr/share/doc/apache2-doc/manual/">
Options Indexes FollowSymlinks
AllowOverride None
Order allow,deny
Allow from all
AddDefaultCharset off
</Directory>

I have changed this configuration in
Alias /apache-manual

Now is ok
Thank you