Fix doc comment for on_prompt
@@ -213,7 +213,7 @@ class Prompt(Dialog):
:type state: :class:`Dict`
:param options: A prompt options object constructed from:meth:`DialogContext.prompt()`
:type options: :class:`PromptOptions`
- :param is_retry: true if is the first time the user for input; otherwise, false
+ :param is_retry: Determines whether `prompt` or `retry_prompt` should be used
:type is_retry: bool
:return: A task representing the asynchronous operation.
