changelog: add 1728.docs.rst

newsfragments/1728.docs.rst

@@ -1,8 +0,0 @@
-Docs: add guide "Testing your bot" (pytest examples)
-
-Add a new documentation page that shows how to test bot handlers with pytest
-without sending real requests to the Telegram API. The guide includes:
-- an echo handler example
-- a callback query example
-
-Both examples use dummy objects so developers can test logic in isolation.