docs: fix typos and add more comments

Author: danfimov

README.md

@@ -28,7 +28,7 @@ async def test() -> None:
 
 ### Default delays
 
-To send delayed messagem, you need to specify queue for delayed messages. You can do it by passing `delay_queue` parameter to the broker. For example:
+To send delayed message, you need to specify queue for delayed messages. You can do it by passing `delay_queue` parameter to the broker. For example:
 
 ```python
 from taskiq_aio_pika import AioPikaBroker, Queue, QueueType

taskiq_aio_pika/broker.py

@@ -72,7 +72,7 @@ def __init__(
         :param url: url to rabbitmq. If None,
             the default "amqp://guest:guest@localhost:5672" is used.
         :param result_backend: custom result backend.
-        :param task_id_generator: custom task_id genertaor.
+        :param task_id_generator: custom task_id generator.
         :param qos: number of messages that worker can prefetch.
         :param loop: specific even loop.
         :param exchange: parameters of exchange that used to send messages.
@@ -247,7 +247,7 @@ async def _declare_queues(
         declared by aio-pika.
 
         :param channel: channel to used for declaration.
-        :return: main queue instance.
+        :return: list of declared queues and their consumer arguments.
         """
         await self._declare_dead_letter_queue(channel)
         declared_queues = []
@@ -323,6 +323,9 @@ def with_queue(self, queue: Queue) -> Self:
         """
         Add new queue to the broker.
 
+        This method should be called before startup,
+        otherwise the new queue won't be declared and bound to exchange.
+
         :param queue: queue to add.
         :return: self.
         """