[Bug] Svelte component documentation isn't added to autodocs documentation

[Masstronaut]

Describe the bug

Following the official svelte component documentation guidelines doesn't result in the autodocs generated page having documentation for the component.

Steps to reproduce the behavior

1. Create a svelte component
2. Document it in the officially recommended format
3. enable autodocs
4. run storybook and look at the generated autodocs for it. Note that the component description is not present.

Expected behavior

The same markdown documentation used for the officially recommended method of documenting a component should also be provided to the autodocs for any svelte stories.

Screenshots and/or logs

Example of the commented documentation working within VSCode:

Example of the autodoc-generated documentation not containing that same information:

Environment

• OS: Mac OS
• Node.js version: v20.5.0
• NPM version: 9.8.0
• Browser (if applicable): N/A
• Browser version (if applicable): N/A
• Device (if applicable): N/A

Additional context

This issue, along with storybookjs/addon-svelte-csf#122 would go a long way towards improving the storybook docs experience for Svelte.

[JReinhold]

@Masstronaut I've transferred this issue from the storybookjs/addon-svelte-csf to the main storybook repo, since I believe this is unrelated to the addon but a feature in the Storybook renderer itself that is missing.

[j3rem1e]

Afaik it's related to how sveldoc-parser extracts the documentation. The description should be before @component, not after.