Fix typo in rtp_sender.h

Addendum to cl 135165, where cl upload failed without me noticing.

Bug: webrtc:8052,webrtc:8975
Change-Id: Id46f25bc4f59fc05c1ada039a2ea17a2feac75e2
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/136680
Reviewed-by: Danil Chapovalov <danilchap@webrtc.org>
Commit-Queue: Erik Språng <sprang@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#27925}
diff --git a/modules/rtp_rtcp/source/rtp_sender.h b/modules/rtp_rtcp/source/rtp_sender.h
index cb3cdea..0dae94a 100644
--- a/modules/rtp_rtcp/source/rtp_sender.h
+++ b/modules/rtp_rtcp/source/rtp_sender.h
@@ -103,8 +103,8 @@
   bool IsRtpHeaderExtensionRegistered(RTPExtensionType type) const;
   int32_t DeregisterRtpHeaderExtension(RTPExtensionType type);
 
-  // Returns an RtpPacketSendResult indicating succes, failure or invalid
-  // status such as on incorrect sequence number.
+  // Returns an RtpPacketSendResult indicating success, network unavailable,
+  // or packet not found.
   RtpPacketSendResult TimeToSendPacket(uint32_t ssrc,
                                        uint16_t sequence_number,
                                        int64_t capture_time_ms,