fix: log nginx errors to stderr [no ci]

Author: Naramsim

Resources/nginx/nginx.conf

@@ -13,7 +13,7 @@ http {
         '$remote_addr '
         '"$request" $status cs:$upstream_cache_status s:$bytes_sent '
         'r:"$http_referer"';
-    error_log /dev/stdout warn;
+    error_log stderr warn;
     include mime.types;
     default_type application/octet-stream;