Incomplete conditional sentence, missing comma & article

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#L39

### Sentence Fragment – Incomplete conditional sentence & proper noun inaccuracy
***Inaccurate:***
If you want to add new filter condition for your desired field type in Appflowy.

***Accurate:***
If you want to add `a` new filter condition for your desired field type in `AppFlowy`,

***Note:***
There are many instances in the documentation where the `f` in AppFlowy is written in lowercase, but I could not fix it as it will be redundant. However, I did correct it here since it coincided with other errors that needed fixing.

### Missing Comma & Article
***Inaccurate:***
First you have to find the specific field type filter entity or create it if doesn't exist.

***Accurate:***
First`,` you have to find the specific field type filter entity or create `it` if it doesn't exist.