Update index.bs

Author: youennf

index.bs

@@ -131,7 +131,7 @@ On sender side, as part of [=readEncodedData=], frames produced by |rtcObject|'s
 As [=writeEncodedData=] ensures that the transform cannot reorder frames, the encoder's output order is also the order followed by packetizers to generate RTP packets and assign RTP packet sequence numbers.
 
 On receiver side, as part of [=readEncodedData=], frames produced by |rtcObject|'s packetizer MUST be enqueued in |rtcObject|.`[[readable]]` in the same encoder's output order.
-To ensure the order is respected, the packetizer will typically use RTP packet sequence numbers to reorder RTP packets as needed before enqueuing frames in |rtcObject|.`[[readable]]`.
+To ensure the order is respected, the depacketizer will typically use RTP packet sequence numbers to reorder RTP packets as needed before enqueuing frames in |rtcObject|.`[[readable]]`.
 As [=writeEncodedData=] ensures that the transform cannot reorder frames, this will be the order expected by |rtcObject|'s decoder.
 
 ## Extension attribute ## {#attribute}