fix README.md

ejabberd/README.md

@@ -9,7 +9,7 @@ https://www.altlinux.org/%D0%A1%D0%BE%D0%B7%D0%B4%D0%B0%D0%BD%D0%B8%D0%B5_%D1%81
 
 ```bash
 apt-get install ejabberd openssl
-cp conf/ejabberd/ejabberd.yml.example /etc/ejabberd/ejabberd.yml
+cp conf/ejabberd/ejabberd.yml /etc/ejabberd/ejabberd.yml