examples: improve HTML framework's generated typescript stories

[Matthew-Smith]

Issue:

What I did

The example stories for the typescript version of the HTML Framework had some issues that caused typescript to complain. This improves that and also adds a section to the HTML Framework readme to explain how to get the typescript versions of the examples when starting from a new project.

How to test

• Is this testable with Jest or Chromatic screenshots?
• Does this need a new example in the kitchen sink apps?
• Does this need an update to the documentation?

If your answer is yes to any of these, please make sure to include it in your PR.

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[yannbf]

Hey @Matthew-Smith thanks a lot! This is amazing 🚀🚀

[Matthew-Smith]

@yannbf is there a reason this PR was closed? I'm happy to fix it up if there are any changes needed

[yannbf]

Great question @Matthew-Smith , this should not have been closed, but merged instead. I'm on holidays so I can't do much but @ndelangen could you please take a look? Thank you!!

[ndelangen]

@Matthew-Smith It closed because you deleted the fork:
https://github.com/Matthew-Smith/storybook/tree/fix-html-ts-template-stories

[ndelangen]

I need to update this branch with next so I'll close this PR, and open a new one..

[Matthew-Smith]

I see now! Sorry about the confusion!