webrtc: fix gtk-doc annotations
diff --git a/gst-libs/gst/webrtc/rtcsessiondescription.h b/gst-libs/gst/webrtc/rtcsessiondescription.h
index 3783dff..3e0f1f4 100644
--- a/gst-libs/gst/webrtc/rtcsessiondescription.h
+++ b/gst-libs/gst/webrtc/rtcsessiondescription.h
@@ -35,8 +35,8 @@
 
 /**
  * GstWebRTCSessionDescription:
- * type: the #GstWebRTCSDPType of the description
- * sdp: the #GstSDPMessage of the description
+ * @type: the #GstWebRTCSDPType of the description
+ * @sdp: the #GstSDPMessage of the description
  *
  * See <ulink url="https://www.w3.org/TR/webrtc/#rtcsessiondescription-class">https://www.w3.org/TR/webrtc/#rtcsessiondescription-class</ulink>
  */