Updated Notification configuration notes (markdown)

Notification-configuration-notes.md

@@ -46,11 +46,25 @@ This is for doing an actual HTTP webform style subsmission.
 
 - see https://github.com/caronc/apprise/wiki/Notify_Custom_Form
 
-## JSON
+## JSON style POST / PUT requests
 
-Use the `jsons://` notification type and simply set the body in the "Notification body"
+If you have a JSON style notification you want to send, do **not** use `json://` _(it does not do what you think it does)_, use `post://`, `posts://`, `put://` or `puts://` etc
 
-See note about headers in the POST/POSTS section
+When the notification fires the application will attempt to check if there is a valid JSON document, if there is, it will automatically append the `Content-type: application/json; charset=utf-8` HTTP header
+
+Always use **`|tojson`** to be sure the string is safe in JSON, for example
+
+**Notification body example**
+
+```
+{
+  'myKey': 1234,
+  'url': '{{watch_url|tojson}}'
+}
+
+```
+
+For extra headers - see note about headers in the [POST/POSTS section](#postposts)
 
 ## GET/PLAIN API