installer: Move missing_dictionaries configuration to with other config.

It already has been made to explicitly conflict with
`--no-overwrite-settings`, so moving it inside the else block is safe.

scripts/lib/install

@@ -355,6 +355,10 @@ EOF
         crudini --set /etc/zulip/zulip.conf certbot auto_renew yes
     fi
 
+    if [ -n "$POSTGRES_MISSING_DICTIONARIES" ]; then
+        crudini --set /etc/zulip/zulip.conf postgresql missing_dictionaries true
+    fi
+
     "$ZULIP_PATH"/scripts/zulip-puppet-apply --force --noop \
                  --write-catalog-summary \
                  --classfile=/var/lib/puppet/classes.txt \
@@ -428,10 +432,6 @@ if [ "$DEPLOYMENT_TYPE" = "dockervoyager" ]; then
     has_postgres=1
 fi
 
-if [ -n "$POSTGRES_MISSING_DICTIONARIES" ]; then
-    crudini --set /etc/zulip/zulip.conf postgresql missing_dictionaries true
-fi
-
 # These server restarting bits should be moveable into puppet-land, ideally
 if [ "$package_system" = apt ]; then
     apt-get -y upgrade