fix: add leading / for specific location in snippet for nginx.conf

[noissue]

pulp_container/app/webserver_snippets/nginx.conf

@@ -9,7 +9,7 @@ location /v2/ {
     client_max_body_size 0;
 }
 
-location extensions/v2/ {
+location /extensions/v2/ {
     proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
     proxy_set_header X-Forwarded-Proto $scheme;
     proxy_set_header Host $http_host;