In ndcode_site, minor visual fixes

diff --git a/ndcode_site b/ndcode_site
index 77874c6..2a90844 160000 (submodule)
--- a/ndcode_site
+++ b/ndcode_site
@@ -1 +1 @@
-Subproject commit 77874c6a45de736010790d76e81c901a5517a3e4
+Subproject commit 2a90844901610f6c64584c3281bc3af6e217edbe