mpegtsenc: do not reference the deprecated ffmpeg option 'vbsf' in a log message

Give a more generic advice.

libavformat/mpegtsenc.c

@@ -996,7 +996,7 @@ 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 the h264_mp4toannexb bitstream filter\n");
             return AVERROR_INVALIDDATA;
         }