update docs

examples/client-publish-pause/main.go

@@ -58,13 +58,13 @@ func main() {
 			buf := make([]byte, 2048)
 			var pkt rtp.Packet
 			for {
-				// read packets from the source
+				// read RTP packets from the source
 				n, _, err := pc.ReadFrom(buf)
 				if err != nil {
 					break
 				}
 
-				// marshal RTP packets
+				// parse RTP packets
 				err = pkt.Unmarshal(buf[:n])
 				if err != nil {
 					panic(err)