chore(dbml-ext): mention scrollDirection setting in the Readme

Author: BOCOVO

packages/dbml-vs-code-extension/README.md

@@ -16,6 +16,7 @@ Allow to visualize the database schema in ERD ( Entity Relationship Diagram ) fr
 The following Visual Studio Code settings are available for the extension.
 
 - `dbmlERDPreviewer.preferredTheme`: This configuration define the theme to use. There are two different theme the `light` and `dark`. The default theme is `dark`.
+- `dbmlERDPreviewer.scrollDirection`: This configuration define the scroll direction. There are two different scroll direction the `up-out` and `up-in`. The default scroll direction is `up-out`.
 
 ## Release Notes