[iOS] fix time format on timetable screen · DroidKaigi/conference-app-2023@30d7f03

Header comments should be consistent with project patterns (file_header)

Lines should not have trailing whitespace (trailing_whitespace)

Lines should not have trailing whitespace (trailing_whitespace)

Lines should not have trailing whitespace (trailing_whitespace)

Lines should not have trailing whitespace (trailing_whitespace)

TODOs should be resolved (Open map) (todo)

TODOs should be resolved (Find good render way) (todo)

TODOs should be resolved (apply like flexbox layout) (todo)

TODOs should be resolved (favorite action) (todo)

Lines should not have trailing whitespace (trailing_whitespace)

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