Fix the issue alias_traversal

https://github.com/yandex/gixy/blob/master/docs/en/plugins/aliastraversal.md

conf/nginx.conf

@@ -1,4 +1,5 @@
-location __PATH__ {
+rewrite ^__PATH__$ ^__PATH__/ permanent;
+location __PATH__/ {
 
   # Path to source
   alias __FINALPATH__/ ;