Bug 1496398 [wpt PR 13353] - Update interfaces/webrtc-dscp.idl, a=testonly

Automatic update from web-platform-testsUpdate interfaces/webrtc-dscp.idl (#13353)

Source: https://github.com/tidoust/reffy-reports/blob/f128525/whatwg/idl/webrtc-dscp.idl
Build: https://travis-ci.org/tidoust/reffy-reports/builds/436975697
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wpt-commits: 397effad2b730dd1d6e5861b7bab5ec1436ceba2
wpt-pr: 13353

testing/web-platform/tests/interfaces/webrtc-dscp.idl

@@ -1,7 +1,7 @@
 // GENERATED CONTENT - DO NOT EDIT
 // Content was automatically extracted by Reffy into reffy-reports
 // (https://github.com/tidoust/reffy-reports)
-// Source: DSCP Control API (https://w3c.github.io/webrtc-dscp-exp/)
+// Source: WebRTC DSCP Control API (https://w3c.github.io/webrtc-dscp-exp/)
 
 partial dictionary RTCRtpEncodingParameters {
     RTCPriorityType networkPriority;  // Note: No default