Misleading defaults for Angular build preset in the portal

Currently, in the Azure portal while creating a new SWA, in Build Details -> Build Presets -> Angular, there is "dist" as "App artifact location" - this is not 100% correct, because in Angular it also includes a folder with the app/project name. Keeping it as is might be a source of misunderstandings and misconfugurations as a result. I suggest it makes sense to change it to:
`dist/`

This way we:
- Clearly show that this piece has to be customized
- Stay consistent with the [documentation](https://docs.microsoft.com/en-gb/azure/static-web-apps/front-end-frameworks#configuration)