Packages: adjusted post-install banners.

pkg/rpm/Makefile.perl

@@ -50,7 +50,8 @@ The $(MODULE_SUMMARY_perl) has been installed.
 To check out the sample app, run these commands:
 
  sudo service unit start
- sudo service unit loadconfig /usr/share/doc/unit-perl/examples/unit.config
+ cd /usr/share/doc/%{name}/examples
+ sudo curl -X PUT --data-binary @unit.config --unix-socket /var/run/control.unit.sock :/config
  curl http://localhost:8600/
 
 Online documentation is available at https://unit.nginx.org