fix: replace dot by dash in site_name

scripts/create_static_site.sh

@@ -6,8 +6,8 @@ if [ -z "$SITE_PREFIX" ]; then
   SITE_NAME=www
   SITE_URL=$SERVER_URL
 else
-SITE_NAME=$SITE_PREFIX
-SITE_URL=$SITE_NAME.$SERVER_URL
+SITE_NAME=${SITE_PREFIX//./-}
+SITE_URL=$SITE_PREFIX.$SERVER_URL
 fi;
 
 NS=${SERVER_URL/./-}