docs: Fix typos

Found via `typos --hidden --format brief`

.github/ISSUE_TEMPLATE/config.yml

@@ -1,5 +1,5 @@
 blank_issues_enabled: false
 contact_links:
-  - name: GitHub dicussions
+  - name: GitHub discussions
     url: https://github.com/empicano/aiomqtt/discussions
     about: Ask (and answer) questions, brainstorm, and show what you've built.

CHANGELOG.md

@@ -219,7 +219,7 @@ Yanked. We recently renamed the project from asyncio-mqtt to aiomqtt. Problem is
 
 - Fix race condition in the "advanced example" in `README.md`. Contributed by [Steve Palmer (@steverpalmer)](https://github.com/steverpalmer) in [#93](https://github.com/sbtinstruments/asyncio-mqtt/pull/93)
 - Make `password` keyword argument optional (as it always should have been). Contributed by [@Shikoruma](https://github.com/Shikoruma) in [#89](https://github.com/sbtinstruments/asyncio-mqtt/pull/89)
-- Fix false postive type error from Pyright regarding `asynccontextmanager`. Contributed by [Shawn Wilsher (@sdwilsh)](https://github.com/sdwilsh) in [#87](https://github.com/sbtinstruments/asyncio-mqtt/pull/87)
+- Fix false positive type error from Pyright regarding `asynccontextmanager`. Contributed by [Shawn Wilsher (@sdwilsh)](https://github.com/sdwilsh) in [#87](https://github.com/sbtinstruments/asyncio-mqtt/pull/87)
 - Fix type hints (mostly related to async_generator). Contributed by [@laundmo](https://github.com/laundmo) in [#86](https://github.com/sbtinstruments/asyncio-mqtt/pull/86)
 
 ## [0.11.0] - 2021-11-04
@@ -290,7 +290,7 @@ Yanked. We recently renamed the project from asyncio-mqtt to aiomqtt. Problem is
 
 ## [0.7.0] - 2020-08-04
 
-I've tested the library for production use at SBT Instruments. This uncovered a bunch of bugs and missing features that I've adressed in this release. We are approaching a 1.0.0 release. Let me know if you want something changed before that via the issue tracker on GitHub.
+I've tested the library for production use at SBT Instruments. This uncovered a bunch of bugs and missing features that I've addressed in this release. We are approaching a 1.0.0 release. Let me know if you want something changed before that via the issue tracker on GitHub.
 
 ### Added
 

aiomqtt/client.py

@@ -189,7 +189,7 @@ class Client:
         max_queued_incoming_messages: Restricts the incoming message queue size. If the
             queue is full, further incoming messages are discarded. ``0`` or less means
             unlimited (the default).
-        max_queued_outgoing_messages: Resticts the outgoing message queue size. If the
+        max_queued_outgoing_messages: Restricts the outgoing message queue size. If the
             queue is full, further outgoing messages are discarded. ``0`` means
             unlimited (the default).
         max_inflight_messages: The maximum number of messages with QoS > ``0`` that can
@@ -644,7 +644,7 @@ def _on_socket_open(
     ) -> None:
         def callback() -> None:
             # client.loop_read() may raise an exception, such as BadPipe. It's
-            # usually a sign that the underlaying connection broke, therefore we
+            # usually a sign that the underlying connection broke, therefore we
             # disconnect straight away
             try:
                 client.loop_read()
@@ -675,7 +675,7 @@ def _on_socket_register_write(
     ) -> None:
         def callback() -> None:
             # client.loop_write() may raise an exception, such as BadPipe. It's
-            # usually a sign that the underlaying connection broke, therefore we
+            # usually a sign that the underlying connection broke, therefore we
             # disconnect straight away
             try:
                 client.loop_write()