[misc] Fix confusing comment (#4376)

Author: Sonlis

infrastructure_files/nginx.tmpl.conf

@@ -17,7 +17,7 @@ upstream signal {
     server 127.0.0.1:10000;
 }
 upstream management {
-    # insert the grpc+http port of your signal container here
+    # insert the grpc+http port of your management container here
     server 127.0.0.1:8012;
 }
 
@@ -75,4 +75,4 @@ server {
 
     ssl_certificate /etc/ssl/certs/ssl-cert-snakeoil.pem;
     ssl_certificate_key /etc/ssl/certs/ssl-cert-snakeoil.pem;
-}
+}