It took me a while to understand this. You can see that at the end of the java exec is
org.logstash.Logstash $'\226f' logstash.conf
Your problem is that where you have '-f logstash.conf' on your command line, you have used an en-dash (octal \226 in Windows CP1251) and not a hyphen (octal \55, decimal 45). That is, you have –f instead of -f.