update doc

Author: mikatong

.changelog/3346.txt

@@ -1,3 +1,3 @@
 ```release-note:enhancement
-resource/tencentcloud_tcr_service_account: support reset_password
+resource/tencentcloud_tcr_service_account: support update password
 ```

website/docs/r/tcr_service_account.html.markdown

@@ -83,6 +83,7 @@ The following arguments are supported:
 * `disable` - (Optional, Bool) whether to disable Service accounts.
 * `duration` - (Optional, Int) expiration date (unit: day), calculated from the current time, priority is higher than ExpiresAt Service account description.
 * `expires_at` - (Optional, Int) Service account expiration time (time stamp, unit: milliseconds).
+* `password` - (Optional, String) Password of the service account.
 * `reset_password` - (Optional, Bool) Reset password.
 * `tags` - (Optional, Map) Tag description list.
 
@@ -96,7 +97,7 @@ The `permissions` object supports the following:
 In addition to all arguments above, the following attributes are exported:
 
 * `id` - ID of the resource.
-* `password` - Password of the service account.
+
 
 
 ## Import