Fix bug in uploads https://github.com/RocketChat/Rocket.Chat/issues/8575

roles/rocketchat_instance/templates/nginx_rocketchat.j2

@@ -47,7 +47,7 @@ server {
     error_log {{ www_log | mandatory }}/{{ app_instance_id }}/error.log;
 
     # set max upload size
-    # client_max_body_size 512M;
+    client_max_body_size 512M;
 
     location / {
         proxy_pass http://backend{{ app_instance_id }}/;
@@ -63,4 +63,4 @@ server {
 
         proxy_redirect off;
     }
-}
\ No newline at end of file
+}