Fix toolbar example

[laske185]

Summary

• fix toolbar example

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[Copilot]

Pull Request Overview

This PR fixes the toolbar example by correcting the JSON quoting of the _items prop in both the fenced code block and the inline usage snippet.

• Updated _items attribute to use single quotes around the JSON string and double quotes inside.
• Applied the same correction to the main example and the usage section.

Comments suppressed due to low confidence (2)

docs/30-components/toolbar.mdx:22

• [nitpick] Since the toolbar has no child elements here, consider using a self-closing tag for brevity and to avoid unnecessary whitespace, e.g., <kol-toolbar ... />.

<kol-toolbar _label="Label" _items='[{"_label": "Button"}, {"_href": "#", "_label": "Link"}]'> </kol-toolbar>

docs/30-components/toolbar.mdx:29

• [nitpick] You can simplify this snippet by converting it to a self-closing tag (e.g., />) since there are no nested children in the example.

        _items='[{"_label": "Button"}, {"_href": "#", "_label": "Link"}]'>

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