Update link to FFmpeg Windows Help website.

Originally committed as revision 15312 to svn://svn.ffmpeg.org/ffmpeg/trunk

doc/faq.texi

@@ -407,7 +407,7 @@ information.
 
 To get help and instructions for building FFmpeg under Windows, check out
 the FFmpeg Windows Help Forum at
-@url{http://arrozcru.no-ip.org/ffmpeg/}.
+@url{http://ffmpeg.arrozcru.org/}.
 
 @section Can you add automake, libtool or autoconf support?
 

doc/general.texi

@@ -438,7 +438,7 @@ BSD make will not build FFmpeg, you need to install and use GNU Make
 
 To get help and instructions for building FFmpeg under Windows, check out
 the FFmpeg Windows Help Forum at
-@url{http://arrozcru.no-ip.org/ffmpeg/}.
+@url{http://ffmpeg.arrozcru.org/}.
 
 @subsection Native Windows compilation