Make WinRM security warning more explicit (ansible#50263)

Make WinRM security warning more explicit.
Currently the warning is "viewed by anyone", this is a much lower risk than arbitrary command injection. Therefore the risk should be phrased appropriately.

+label: docsite_pr

docs/docsite/rst/user_guide/windows_winrm.rst

@@ -578,7 +578,8 @@ in the host vars.
 
 A last resort is to disable the encryption requirement on the Windows host. This
 should only be used for development and debugging purposes, as anything sent
-from Ansible can viewed by anyone on the network. To disable the encryption
+from Ansible can be viewed, manipulated and also the remote session can completely
+be taken over by anyone on the same network. To disable the encryption
 requirement, run the following from PowerShell on the target host:
 
 .. comment: Pygments powershell lexer does not support colons (i.e. URLs)