Awkward Phrase, Article and Clarity Issues

[FakhriAz]

https://github.com/AppFlowy-IO/AppFlowy-Docs/blob/cb1d8a02d240749c85bb75e37c96b9903393f235/essential-documentation/contribute-to-appflowy/write-for-appflowy/drafts/draft-how-to-add-a-new-property-to-appflowy-database.md?plain=1#L59-L61

Awkward Phrase:

Inaccurate: Now with some knowledge that how Flowy-database is structured, we can take a look at a practical example.

Accurate: Now, with some knowledge of how the AppFlowy database is structured, we can take a look at a practical example.

Article and Clarity Issue :

Inaccurate: Let's first see what is property and then go further.

Accurate: Let's first see what a property is, and then go further.