Update agent_windows.asciidoc - Save randomized password before using

Explain that a randomized password should be saved before using it. (English translation for DE)

Author: JanSiero

src/common/en/agent_windows.asciidoc

@@ -315,7 +315,7 @@ This chapter shows how to perform the registration.
 
 The registration and thus the establishment of the mutual trust relationship is done under a {CMK} user with access to the xref:rest_api#[REST-API].
 For this, a good choice is the xref:glossar#automation_user[automation user] `agent_registration` which only has the permission to register agents and is automatically created with every {CMK} installation.
-You can randomize the corresponding automation password (_automation secret_) with the icon:icon_random[alt="Icon for rolling a password."] icon.
+You can randomize the corresponding automation password (_automation secret_) with the icon:icon_random[alt="Icon for rolling a password."] icon. The randomize function generates a new password. You must first save the user before using this new password.
 
 *Note:* Since there is no Agent Controller, and thus no registry and TLS encryption, on very old xref:legacyagent[Windows systems] you will need to use alternative encryption methods if required.
 In this case we recommend using the built-in (symmetric) encryption using the [.guihint]#Symmetric encryption (Linux, Windows)# rule.