[LiveComponent] Update doc on how to use submitForm

[yalit]

Q	A
Bug fix?	no
New feature?	no
Issues	Fix #2509
License	MIT

As described in the issue, I struggled a bit with the usage of the submitForm helper for testing a LiveComponent due to the name of the form used not being correct see #2509.

I propose a small update to the documentation to make it more clear how the formName should be used into the call of submitForm

[smnandre]

I'd suggest to remove the text and use another word than "form" in the exemple..

Something like "create_comment" or "my_form" .

wdyt ?

[yalit]

indeed, I didn't want to update the "core" of the documentation but if it's a possibility, we could indeed do something like:

// Submit form data ('my_form' for your MyFormType form)
$testComponent
    ->submitForm(['my_form' => ['input' => 'value']], 'save');

[yalit]

I pushed that modification

[Kocal]

Suggested change

	// 'form' is the name of the form you're submitting (here FormType).
	// e.a : form submitted is EntityCreationType the name of your form would be 'entity_creation' and should replace 'form' in the below submitForm call
	// 'form' is the name of the form you're submitting (here FormType).
	// e.a : form submitted is EntityCreationType the name of your form would be 'entity_creation' and should replace 'form' in the below submitForm call

[yalit]

I don't know why i was doing that but when looking at the actual render it was properly aligned... Anyhow, a new commit has been made with a simplification of the comments

[Kocal]

Thank you @yalit.

[yalit]

Thanks for the approval and merge!