docs: remove sessionid support from index.md

Author: ZStack-Robot

docs/index.md

@@ -92,9 +92,8 @@ output "zstack_instance" {
 
 - `access_key_id` (String) AccessKey ID for ZStack API. Create AccessKey ID from MN,  Operational Management->Access Control->AccessKey Management. May also be provided via ZSTACK_ACCESS_KEY_ID environment variable. Required if using AccessKey authentication. Mutually exclusive with `account_name` and `account_password`.
 - `access_key_secret` (String, Sensitive) AccessKey Secret for ZStack API. May also be provided via ZSTACK_ACCESS_KEY_SECRET environment variable. Required if using AccessKey authentication. Mutually exclusive with `account_name` and `account_password`.
-- `account_name` (String) Username for ZStack API. May also be provided via ZSTACK_ACCOUN_TNAME environment variable.  Required if using Account authentication. Mutually exclusive with `access_key_id` and `access_key_secret`.
-- `account_password` (String, Sensitive) Password for ZStack API. May also be provided via ZSTACK_ACCOUNT_PASSWORD environment variable. Required if using Account authentication. Mutually exclusive with `access_key_id` and `access_key_secret`.
+- `account_name` (String) Username for ZStack API. May also be provided via ZSTACK_ACCOUN_TNAME environment variable. Required if using Account authentication.  Only supports the platform administrator account (`admin`). Mutually exclusive with `access_key_id` and `access_key_secret`. Using `access_key_id` and `access_key_secret` is the recommended approach for authentication, as it provides more flexibility and security.
+- `account_password` (String, Sensitive) Password for ZStack API. May also be provided via ZSTACK_ACCOUNT_PASSWORD environment variable.Required if using Account authentication.  Only supports the platform administrator account (`admin`). Mutually exclusive with `access_key_id` and `access_key_secret`. Using `access_key_id` and `access_key_secret` is the recommended approach for authentication, as it provides more flexibility and security.
 - `port` (Number) ZStack Cloud MN API port. May also be provided via ZSTACK_PORT environment variable.
-- `session_id` (String) ZStack Cloud Session id.