Fixed few typos & completed 19:00 - 22:59 section subtitles.

We have corrected few typo's & confirmed very few words that were in doubt and added few words that were marked unknown.

Also added subtitles for section from 19:00 -- 21:00

Planning to contribute more. We have looked into the Google drive docs and will be following that to track who is doing what.

Thanks for the initiative.