Adjust wording of webhook copy

docs/ref/notifications.rst

@@ -3,16 +3,16 @@ Webhooks
 
 Your Checkfront account is capable of directly POSTing details of new or modified bookings to your SSL-secured server endpoint.  
 
-Notifications are sent over a standard **HTTPS POST** request in the form of a **JSON** or **XML** formatted booking object containing various particulars on a booking, and can be triggered to send on one or more status changes you as defined in the setup.
+Notifications are sent over a standard **HTTPS POST** request in the form of a **JSON**, **XML**, or **x-www-form-urlencoded** formatted booking object containing various particulars on a booking, and can be triggered to send on one or more status changes as defined by you in the setup process.
 
-Your server should respond with an HTTP 200 upon receipt. After 5 consecutive unsuccessful attempts, your webhook will be disabled.
+Your server **must** respond with an **HTTP 200** class status code immediately upon receipt. If your server does not indicate a successful response in a timely manner, after 5 consecutive failed delivery attempts, your webhook will be automatically disabled.
 
 Webhook setup can be found in the **Manage > Developer** section of your Checkfront account under the "**Webhooks**" tab.
 
-Notification Data
-^^^^^^^^^^^^^^^^^
+Booking Notification Data
+^^^^^^^^^^^^^^^^^^^^^^^^^
 
-An **XML** or **JSON** object containing the following export fields can be found in directly in the **raw body** of the POST request to your server:
+A **JSON**, **XML**, or **x-www-form-urlencoded** object containing the following export fields can be found in directly in the **raw body** of the POST request to your server:
 
 booking
 -------