docs: migration feeding updates

docs/dispatcher/dispatcher.rst

@@ -2,7 +2,7 @@
 Dispatcher
 ##########
 
-Dispatcher is root :obj:`Router` and in code Dispatcher can be used directly for routing updates or attach another routers into dispatcher.
+Dispatcher is root :class:`~aiogram.dispatcher.router.Router` and in code Dispatcher can be used directly for routing updates or attach another routers into dispatcher.
 
 Here is only listed base information about Dispatcher. All about writing handlers, filters and etc. you can find in next pages:
 
@@ -39,16 +39,26 @@ Example:
     router1 = Router()
     dp.include_router(router1)
 
+
+.. _Handling updates:
+
 Handling updates
 ================
 
-All updates can be propagated to the dispatcher by :obj:`Dispatcher.feed_update(bot=..., update=...)` method:
+All updates can be propagated to the dispatcher by :meth:`~aiogram.dispatcher.dispatcher.Dispatcher.feed_update` method:
 
 .. code-block:: python
 
-    bot = Bot(...)
-    dp = Dispatcher()
+  from aiogram import Bot, Dispatcher
 
-    ...
+  async def update_handler(update: Update, bot: Bot, dispatcher: Dispatcher):
+    result = await dp.feed_update(bot, update)
 
-    result = await dp.feed_update(bot=bot, update=incoming_update)
+Also you can feed raw update (dictionary) object to the dispatcher by :meth:`~aiogram.dispatcher.dispatcher.Dispatcher.feed_raw_update` method:
+
+.. code-block:: python
+
+  from aiogram import Bot, Dispatcher
+
+  async def update_handler(raw_update: dict[str, Any], bot: Bot, dispatcher: Dispatcher):
+    result = await dp.feed_raw_update(bot, raw_update)