Doc - fix path to downloading Mad Developer

Reviewed-by: ck

doc/maemodev.qdoc

@@ -127,7 +127,7 @@
     To install and configure Mad Developer:
 
      \list 1
-         \o On the Nokia N900, select \gui{Download} > \gui{Development} > \gui{mad-developer}
+         \o On the Nokia N900, select \gui{App Manager > Download} > \gui{Development} > \gui{mad-developer}
          to install the Mad Developer software package.
          \o Click \gui {Mad Developer} to start the Mad Developer application.