Bug 1835047 - Modify test expectations for RTCRtpReceiver-jitterBufferTarget-stats.html.r=jib

Differential Revision: https://phabricator.services.mozilla.com/D181560

testing/web-platform/meta/webrtc-extensions/RTCRtpReceiver-jitterBufferTarget-stats.html.ini

@@ -0,0 +1,6 @@
+[RTCRtpReceiver-jitterBufferTarget-stats.html]
+
+  [measure raising and lowering video jitterBufferTarget]
+    expected:
+      if (os == "linux"): [FAIL, PASS]
+