Missing things from docs

[KaloyanGG]

https://tanstack.com/start/latest/docs/framework/react/tutorial/reading-writing-file

In this tutorial, the form is refreshing the page, maybe event in props and event.preventDefault() is needed or explained why it is not needed. Also the JokeForm component is not mentioned where to add.

I figured myself, just wanted to notify you for these and maybe clarify for me if event.preventDefault() should be used or not.