cli.main: fix msecs format in logging output (#3025)
cli.main: fix msecs format in logging output (#3025)


bastimeyer/streamlink,gravyboat/streamlink,beardypig/streamlink,chhe/streamlink,streamlink/streamlink,chhe/streamlink,bastimeyer/streamlink,melmorabity/streamlink,melmorabity/streamlink,gravyboat/streamlink,streamlink/streamlink,beardypig/streamlink