Update README.md

Change from Visual Studio to Visual Studio code as in the screenshot.

README.md

@@ -100,7 +100,7 @@ flutter config --enable-macos-desktop
 flutter config --enable-linux-desktop
 ```
 
-* Open the `app_flowy` folder located at xx/appflowy/frontend with Visual Studio or other IDEs at your disposal.
+* Open the `app_flowy` folder located at xx/appflowy/frontend with Visual Studio Code or other IDEs at your disposal.
 * Go to the Run and Debug tab and then click the run button.
 ![Run the project](https://github.com/AppFlowy-IO/appflowy/blob/main/doc/imgs/run.png)