docs(messaging): balance parentheses in text

noticed by @mtalhabaig3
supercedes #7099

Author: mikehardy

docs/messaging/usage/messaging-with-xmpp.md

@@ -5,7 +5,7 @@ description: Send and receive FCM messages directly between devices & your serve
 
 ## Introduction
 
-This is a reference for using the Firebase Messaging service to send and receive messages directly between devices. Although methods (e.g. `sendMessage()` are provided for sending and receiving message, additional configuration is needed to ensure a working solution for direct messaging from devices.
+This is a reference for using the Firebase Messaging service to send and receive messages directly between devices. Although methods (e.g. `sendMessage()`) are provided for sending and receiving message, additional configuration is needed to ensure a working solution for direct messaging from devices.
 
 > A custom solution is **only required** if plan to exchange messages directly between devices (including the message sender device)
 > please ensure a solution from this article has been configured to successfully send and receive messages from a device.