codec_desc: update dvaudio tag

libavcodec/codec_desc.c

@@ -1796,7 +1796,7 @@ static const AVCodecDescriptor codec_descriptors[] = {
         .id        = AV_CODEC_ID_DVAUDIO,
         .type      = AVMEDIA_TYPE_AUDIO,
         .name      = "dvaudio",
-        .long_name = NULL_IF_CONFIG_SMALL("DVAUDIO"),
+        .long_name = NULL_IF_CONFIG_SMALL("DV audio"),
         .props     = AV_CODEC_PROP_LOSSY,
     },
     {