Rewind Text/Grammar fixes. (Sort of)

[drago-bit]

1. Changed 'Ops' title to 'Oops 😢' in RewindData

Thinking you meant Oops as in mistake instead of Ops.
(e4a9ffb)

2. Update strings for songs, albums, artists, and playlists

Corrected Listened to (Year) to Listened to in (Year), which sees more convenient.
(d4b40af)

3. Update text in IntroSlide for clarity and emphasis

Just some arrangements in Indent and Lines.
(4191a7c)

Please check the edits are worth it. Thanks for the great app and wonderful support all these years.

[fast4x]

Thanks