s/vbsf/bsf/

-vbsf doesn't exist anymore. It got renamed to -bsf somewhere along the
line. Update print statement accordingly.

Signed-off-by: Anton Khirnov <anton@khirnov.net>

libavformat/mpegtsenc.c

@@ -956,7 +956,7 @@ static int mpegts_write_packet(AVFormatContext *s, AVPacket *pkt)
 
         if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001) {
             av_log(s, AV_LOG_ERROR, "H.264 bitstream malformed, "
-                   "no startcode found, use -vbsf h264_mp4toannexb\n");
+                   "no startcode found, use -bsf h264_mp4toannexb\n");
             return -1;
         }