avformat/mpegenc - fix typo in VBV warning

Default VBV buffer size is 230KB, not 130KB.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavformat/mpegenc.c

@@ -397,7 +397,7 @@ static av_cold int mpeg_mux_init(AVFormatContext *ctx)
                 stream->max_buffer_size = 6 * 1024 + props->buffer_size / 8;
             else {
                 av_log(ctx, AV_LOG_WARNING,
-                       "VBV buffer size not set, using default size of 130KB\n"
+                       "VBV buffer size not set, using default size of 230KB\n"
                        "If you want the mpeg file to be compliant to some specification\n"
                        "Like DVD, VCD or others, make sure you set the correct buffer size\n");
                 // FIXME: this is probably too small as default