nginx conf readme update

www/content/Nginx.conf.md

@@ -29,6 +29,21 @@ Nginx config:
             deny  all;
         }
 
+        # deny all md
+        location ~ \.md {
+            deny  all;
+        }
+
+        # deny all txt
+        location ~ \.txt {
+            deny  all;
+        }
+
+        # deny all url
+        location ~ \.url {
+            deny  all;
+        }
+
         # deny all hidden files
         location ~ /\. {
             deny  all;