Fix fail_with text

Fix fail_with text, when the target system is locked.

Author: wez3

modules/post/windows/gather/phish_windows_credentials.rb

@@ -109,7 +109,7 @@ def run
     # Check whether target system is locked
     locked = client.railgun.user32.GetForegroundWindow()['return']
     if locked == 0
-      fail_with(Failure::Unknown, "Target system is locked. This post module cannot click on Outlooks security warning when the target system is locked")
+      fail_with(Failure::Unknown, "Target system is locked. This post module cannot start the loginprompt when the target system is locked.")
     end
 
     # Switch to check whether a specific process needs to be monitored, or just show the popup immediatly.