Update 0x04f-Testing-Network-Communication.md (#2178)

Fixing typo

Document/0x04f-Testing-Network-Communication.md

@@ -190,7 +190,7 @@ A simple way to simulate a man-in-the-middle (MITM) attack is to configure a net
 Following scenarios are possible:
 
 - Use your host computer's built-in WiFi card as an access point and use your wired connection to connect to the target network.
-- Use an external USB WiFi card as an access point and user your host computer built-in WiFi to connect to the target network (can be vice-versa).
+- Use an external USB WiFi card as an access point and use your host computer's built-in WiFi to connect to the target network (can be vice-versa).
 - Use a separate access point and redirect the traffic to your host computer.
 
 The scenario with an external USB WiFi card require that the card has the capability to create an access point. Additionally, you need to install some tools and/or configure the network to enforce a man-in-the-middle position (see below). You can verify if your WiFi card has AP capabilities by using the command `iwconfig` on Kali Linux: