Update translations for arch-design

Sort entries alphabetical, remove arch-design from zh_CN directory, this
is not needed anymore.

Create empty translation file so that tooling works.

Change-Id: I1cb392b34d2cb28608d535b8a84e2e29ebb49881

doc-tools-check-languages.conf

@@ -1,6 +1,6 @@
 # directories to be set up
 declare -A DIRECTORIES=(
-    ["zh_CN"]="common glossary arch-design"
+    ["zh_CN"]="common glossary"
 )
 
 # books to be built
@@ -25,12 +25,12 @@ DOC_DIR="doc/"
 # project-config/jenkins/scripts/common_translation_update.sh
 declare -A SPECIAL_BOOKS=(
     ["admin-guide-cloud"]="RST"
+    ["arch-design"]="RST"
     ["image-guide"]="RST"
     ["install-guide"]="RST"
     ["networking-guide"]="RST"
     ["user-guide"]="RST"
     ["user-guide-admin"]="RST"
-    ["arch-design"]="RST"
     # Skip in-progress guides
     ["contributor-guide"]="skip"
     ["config-ref-rst"]="skip"