Correct typo in sample code

explainer.md

@@ -46,12 +46,12 @@ This proposal does not aim for improving the accuracy of end-to-end delay measur
 
 #### [API 1]: captureTimestamp
 
-This specification adds captureTimestamp, type of DOMHighResTimeStamp, to the RTCRtpContributingSource dictionary. This surfaces the absolute capture timestamp in the absolute capture time RTP header extension, when it is present or can be extrapolated from previously received data, for the last rendered audio or video frame. It can be used for measuring audio video synchronization performance as illustrated in the following example code:
+This specification adds captureTimestamp, type of DOMHighResTimestamp, to the RTCRtpContributingSource dictionary. This surfaces the absolute capture timestamp in the absolute capture time RTP header extension, when it is present or can be extrapolated from previously received data, for the last rendered audio or video frame. It can be used for measuring audio video synchronization performance as illustrated in the following example code:
 
     [receiverAudio, receiverVideo] = peerconnection.getReceivers();
 
-    latestCaptureTimestampAudio = receiverAudio.getSynchronizationSources()[0].captureTimeStamp;
-    latestCaptureTimestampVideo = receiverVideo.getSynchronizationSources()[0].captureTimeStamp;
+    latestCaptureTimestampAudio = receiverAudio.getSynchronizationSources()[0].captureTimestamp;
+    latestCaptureTimestampVideo = receiverVideo.getSynchronizationSources()[0].captureTimestamp;
 
     synchronizationError = latestCaptureTimestampAudio - latestCaptureTimestampVideo;
 
@@ -63,8 +63,8 @@ An example code to use captureTimestamp and senderCaptureTimeOffset to calculate
 
     receiver = peerconnection.getReceivers()[0];
     csrc = receiver.getSynchronizationSources()[0];
-    latestCaptureTimestamp = csrc.captureTimeStamp;
-    latestSenderCaptureTimeOffset = csrc.SenderCaptureTimeOffset;
+    latestCaptureTimestamp = csrc.captureTimestamp;
+    latestSenderCaptureTimeOffset = csrc.senderCaptureTimeOffset;
     receiverTimestamp = csrc.timestamp;
 
     // Calculates sender-receiver clock offset from stats.