Update README.md with link to VSCode marketplace

Author: inferrinizzard

README.md

@@ -167,7 +167,8 @@ This makes SQL Formatter available as a global variable `window.sqlFormatter`.
 
 ### Usage in editors
 
-- [VSCode extension](https://github.com/sql-formatter-org/sql-formatter-vscode)
+- [VSCode extension](https://marketplace.visualstudio.com/items?itemName=inferrinizzard.prettier-sql-vscode)
+  - [Repo](https://github.com/sql-formatter-org/sql-formatter-vscode)
 - [Vim extension](https://github.com/fannheyward/coc-sql/)
 - [Prettier plugin](https://github.com/un-ts/prettier/tree/master/packages/sql)