Updated HTTP request API (markdown)

HTTP-request-API.md

@@ -117,7 +117,9 @@ Parameter | Value Range | Description | Since Version
 
 ## XML response
 This is the XML file sent as response to every API call.
+
 Parameter | Value Range | Description
+| --- | --- | --- |
 <ac> | 0 to 255 | Master Brightness
 <cl> | 3x 0..255 | Primary Color RGB
 <ns> | 0 or 1 | Notification Sending on