Update prowlarr.subfolder.conf.sample

Downloads through Radarr seems to make requests to Prowlarr at /download instead of /api. In the old config, if the Authelia config is enabled, these /download requests would be blocked by Authelia

prowlarr.subfolder.conf.sample

@@ -1,4 +1,4 @@
-## Version 2023/02/05
+## Version 2023/09/13
 # make sure that your prowlarr container is named prowlarr
 # make sure that prowlarr is set to work with the base url /prowlarr/
 
@@ -34,3 +34,13 @@ location ~ /prowlarr(/[0-9]+)?/api {
     proxy_pass $upstream_proto://$upstream_app:$upstream_port;
 
 }
+
+location ~ /prowlarr(/[0-9]+)?/download {
+    include /config/nginx/proxy.conf;
+    include /config/nginx/resolver.conf;
+    set $upstream_app prowlarr;
+    set $upstream_port 9696;
+    set $upstream_proto http;
+    proxy_pass $upstream_proto://$upstream_app:$upstream_port;
+
+}