docs: Extend password entry of ansible.builtin.user (#79694)

* docs: Extend password entry of ansible.builtin.user

Clarify that `password` sets the password hash.
Not the actual password.
Fixes part of  #79684

lib/ansible/modules/user.py

@@ -86,12 +86,13 @@ options:
         version_added: "2.0"
     password:
         description:
-            - Optionally set the user's password to this encrypted value.
+            - If provided, set the user's password to the provided encrypted hash (Linux) or plain text password (macOS).
-            - On macOS systems, this value has to be cleartext. Beware of security issues.
+            - B(Linux/Unix/POSIX:) Enter the hashed password as the value.
+            - See L(FAQ entry,https://docs.ansible.com/ansible/latest/reference_appendices/faq.html#how-do-i-generate-encrypted-passwords-for-the-user-module)
+              for details on various ways to generate the hash of a password.
             - To create an account with a locked/disabled password on Linux systems, set this to C('!') or C('*').
             - To create an account with a locked/disabled password on OpenBSD, set this to C('*************').
-            - See L(FAQ entry,https://docs.ansible.com/ansible/latest/reference_appendices/faq.html#how-do-i-generate-encrypted-passwords-for-the-user-module)
+            - B(OS X/macOS:) Enter the cleartext password as the value. Be sure to take relevant security precautions.
-              for details on various ways to generate these password values.
         type: str
     state:
         description: