README.md aktualisiert

README.md

@@ -20,6 +20,6 @@ chmod 600 ~/.ssh/authorized_keys
 ```
 
 ```
-sed -i "s/.*PasswordAuthentication.*/PasswordAuthentication no/g" /etc/ssh/sshd_config
+sed -ri "s/^#? *PasswordAuthentication *yes.*/PasswordAuthentication no/" /etc/ssh/sshd_config
 sudo systemctl restart ssh
 ```