Add comment to fix flac script

fix_unknown_album_and_artist_flac_file.sh

@@ -1,5 +1,7 @@
 #!/bin/bash
 
+# script to fix where flac tags are set correctly but navidrome still sees them as having [Unknown album] and [Unknown artist]
+
 echo "Fixing flac file $1"
 
 echo "running command ffmpeg -i $1 -c:a flac -map_metadata 0 "fixed.flac""