docs: cross toolchain is now installed into host/usr/bin.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

docs/buildroot.html

@@ -241,9 +241,8 @@
       </li>
 
       <li><code>host/</code> contains the installation of tools compiled for
-      the host that are needed for the proper execution of Buildroot, except
-      for the cross-compilation toolchain which is installed under
-      <code>staging/</code>.</li>
+      the host that are needed for the proper execution of Buildroot,
+      including the cross-compilation toolchain.</li>
 
       <li><code>toolchain/</code> contains the build directories for the
       various components of the cross-compilation toolchain.</li>