Fix Metadata.Entry link
Fix Metadata.Entry link

PiperOrigin-RevId: 385595264

ened/ExoPlayer,google/ExoPlayer,google/ExoPlayer,amzn/exoplayer-amazon-port,amzn/exoplayer-amazon-port,androidx/media,amzn/exoplayer-amazon-port,ened/ExoPlayer,androidx/media,androidx/media,google/ExoPlayer,ened/ExoPlayer