Update config-options.md

Provide both available options for "log-destination" to make it more obvious that no filesystem logs are supported.

content/shared/influxdb3-cli/config-options.md

@@ -939,6 +939,11 @@ Sets the filter directive for logs.
 
 Specifies the destination for logs.
 
+This option supports the following values:
+
+- `stdout` _(default)_
+- `stderr`
+
 **Default:** `stdout`
 
 | influxdb3 serve option | Environment variable |
@@ -1993,4 +1998,4 @@ Enables the experimental PachaTree storage engine for improved performance.
 | :---------------------- | :------------------------------------- |
 | `--use-pacha-tree`      | `INFLUXDB3_ENTERPRISE_USE_PACHA_TREE` |
 
-{{% /show-in %}}
+{{% /show-in %}}