provision.pl - fixed an escape

perl-script/provision.pl

@@ -198,7 +198,7 @@ system("chmod 770 /usr/local/sbin/ngircd-ctl");
 
 # Disable root login
 system("sed -i -e 's/^[^#]*PermitRootLogin.*\$/PermitRootLogin no/' /etc/ssh/sshd_config");
-system("sed -i -e 's/^PasswordAuthentication.*$//' /etc/ssh/sshd_config");
+system("sed -i -e 's/^PasswordAuthentication.*\$//' /etc/ssh/sshd_config");
 system("echo 'PasswordAuthentication no' >> /etc/ssh/sshd_config");
 system("rcctl restart sshd");