doc: add usage recommendation for writable._destroy

PR-URL: #41040
Reviewed-By: Matteo Collina <[email protected]>

Author: RafaelGSS

doc/api/stream.md

@@ -2651,6 +2651,8 @@ added: v8.0.0
 
 The `_destroy()` method is called by [`writable.destroy()`][writable-destroy].
 It can be overridden by child classes but it **must not** be called directly.
+Furthermore, the `callback` should not be mixed with async/await
+once it is executed when a promise is resolved.
 
 #### `writable._final(callback)`