Inconsistent Article Usage and Verb Voice

https://github.com/AppFlowy-IO/AppFlowy-Docs/blob/cb1d8a02d240749c85bb75e37c96b9903393f235/essential-documentation/contribute-to-appflowy/architecture/frontend/database-view/kanban-board.md?plain=1#L16-L22

### Verb Voice Misuse
***Inaccurate***
contains multiple groups and each group `represents`
***Accurate***
contains multiple groups and each group `is represented`

###Missing Article and Verb Voice Misuse
***Inaccurate***
| Group | contains `list` of cards and each card `represents` as a
***Accurate***
| Group | contains `a list` of cards and each card `is represented` as a

###Missing Article
***Inaccurate***
| Grouping cell | the `FieldType` of the cell in `row` equal to the
***Accurate***
| Grouping cell | the `FieldType` of the cell in `a` row equal to the

###Verb Voice Misuse
***Inaccurate***
| Grouping data | each group has its grouping data that `represents` as
***Accurate***
| Grouping data | each group has its grouping data that `is represented` as