hydra: replace telnet with brute force example (tldr-pages#8090)

pages/common/hydra.md

@@ -12,9 +12,9 @@
 
 `hydra -l {{username}} -P {{path/to/wordlist.txt}} {{host_ip}} {{ssh}}`
 
-- Guess Telnet credentials using a list of usernames and a single password, specifying a non-standard port and IPv6:
+- Guess HTTPS webform credentials using a list of usernames and a list of passwords:
 
-`hydra -L {{path/to/usernames.txt}} -p {{password}} -s {{port}} -6 {{host_ip}} {{telnet}}`
+`hydra -L {{path/to/usernames.txt}} -P {{path/to/wordlist.txt}} {{host_ip}} {{https-post-form}} "{{url_without_host}}:{{https_post_request}}:{{login_failed_string}}"`
 
 - Guess FTP credentials using usernames and passwords lists, specifying the number of threads: