Move code-update directory to architecture

It makes sense to have the code-update documents under
architecture instead of at the top directory.

Change-Id: Ie850a12adf0507307ca29edddaaff67756c35029
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>
diff --git a/userguide/userguide.tex b/userguide/userguide.tex
index e242ef7..2f323c5 100644
--- a/userguide/userguide.tex
+++ b/userguide/userguide.tex
@@ -29,6 +29,6 @@
 \input{rest-api}
 \input{host-management}
 \input{console}
-\input{code-update/code-update}
+\input{architecture/code-update/code-update}
 
 \end{document}