TextControl: Set Storybook control types on help, label and type

[walbo]

What?

• Set control type on help, label and type in the storybook for the TextControl component.
• Fix example not showing in the story docs.

Why?

• The story breaks if you try to add a help or label prop.
• The example is not showing in the story.

How?

• Set control type to text on help, label and type props.
• Remove @example from the example to make it visible in the docs.

Testing Instructions

Open the TextControls story and make sure you can set label, help and type props without the story breaking

Screenshots or screencast

Before	After

[codesandbox]

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[ciampo]

LGTM 🚀

Thank you for your work here!

[ciampo]

I wish there was a way to show all the possible input types in a dropdown, rather than allowing any string. But this is definitely a better scenario than the Object control

[walbo]

Yeah. Ideally I think the type prop on TextControl should be limited. To me I it doesn't make sense to allow ex type="button" and type="checkbox" here.

However I think that is a discussion for another PR. If you want I can open a PR and we can continue it there.