Fix typos

Author: farmio

docs/introduction.md

@@ -47,7 +47,7 @@ Initialization of XKNX object. Constructor may take several arguments like a ref
     await xknx.start()
 ```
 
-Asynchronous start of the XKNX object. `xknx.start()` will connect to a KNX/IP device and either build a tunnel or connect through Mulitcast UDP.
+Asynchronous start of the XKNX object. `xknx.start()` will connect to a KNX/IP device and either build a tunnel or connect through Multicast UDP.
 
 ```python
     await xknx.stop()

docs/xknx.md

@@ -84,7 +84,7 @@ For SECURE tunnels this setting selects an interface from a given keyfile.
 await xknx.start()
 ```
 
-`xknx.start()` will search for KNX/IP devices in the network and either build a KNX/IP-Tunnel or open a mulitcast KNX/IP-Routing connection. `start()` will not take any parameters.
+`xknx.start()` will search for KNX/IP devices in the network and either build a KNX/IP-Tunnel or open a multicast KNX/IP-Routing connection. `start()` will not take any parameters.
 
 # [](#header-2)Stopping
 

test/devices_tests/binary_sensor_test.py

@@ -245,7 +245,7 @@ async def test_process_callback_ignore_internal_state_no_counter(self):
         async_after_update_callback.assert_called_once_with(switch)
 
     async def test_process_group_value_response(self):
-        """Test precess of GroupValueResponse telegrams."""
+        """Test process of GroupValueResponse telegrams."""
         xknx = XKNX()
         switch = BinarySensor(
             xknx,

xknx/io/transport/udp_transport.py

@@ -133,7 +133,7 @@ def create_multicast_sock(
         return sock
 
     async def connect(self) -> None:
-        """Connect UDP socket. Open UDP port and build mulitcast socket if necessary."""
+        """Connect UDP socket. Open UDP port and build multicast socket if necessary."""
         udp_transport_factory = UDPTransport.UDPTransportFactory(
             data_received_callback=self.data_received_callback,
         )