fix: correct try_files directive in Nginx configuration for proper request handling

Author: Yehonal

conf/dist/maintenance/conf/default.conf

@@ -16,7 +16,7 @@ server {
     index index.html;
 
     location / {
-        try_files $uri $uri/ /index.html;
+        try_files $uri $uri /index.html;
     }
 
     error_page 503 @maintenance;