Update README.md

README.md

@@ -103,7 +103,7 @@ int main(int argc, char **argv) {
 ### Usage
 
 The **api** paramater contains all methods of Telegram APIs, and **update** paramater contains the message sent by the user.  
-The **update** paramater is the JSON rappresentation of the message sent by the user, and for example if you need to access the chat-id paramater you can simply type : 
+The **update** paramater is the JSON rappresentation of the update sent by the user, and for example if you need to access the chat-id paramater you can simply type : 
 ```c++
 update.message->chat->id
  ```