Add missing dot at the end of RELEASENOTES item
Add missing dot at the end of RELEASENOTES item

PiperOrigin-RevId: 223206504

superbderrick/ExoPlayer,stari4ek/ExoPlayer,ened/ExoPlayer,androidx/media,superbderrick/ExoPlayer,superbderrick/ExoPlayer,google/ExoPlayer,ened/ExoPlayer,androidx/media,google/ExoPlayer,saki4510t/ExoPlayer,stari4ek/ExoPlayer,amzn/exoplayer-amazon-port,saki4510t/ExoPlayer,androidx/media,amzn/exoplayer-amazon-port,google/ExoPlayer,amzn/exoplayer-amazon-port,stari4ek/ExoPlayer,ened/ExoPlayer,saki4510t/ExoPlayer