Fix typo

Author: jvazquez-r7

modules/exploits/windows/smb/smb_relay.rb

@@ -374,7 +374,7 @@ def smb_cmd_negotiate(c, buff)
     end
 
     # If extended security isn't supported or we're trying reflection
-    # ntlmv1 should be sued, otherwise, use ntlmssp
+    # ntlmv1 should be used, otherwise, use ntlmssp
     if extended_security && target_host != smb[:ip]
       smb[:ntlmssp] = true
       negotiate_ntlmssp(smb, target_host)