Changed comment for nginx.conf

src/rpm/conf/nginx.conf

@@ -82,7 +82,7 @@ http {
         root            /usr/local/vesta/web;
         charset         utf-8;
 
-        // Fix error "The plain HTTP request was sent to HTTPS port"
+        # Fix error "The plain HTTP request was sent to HTTPS port"
         error_page      497 https://$host:$server_port$request_uri;
 
         ssl                  on;