[docs] Fix incorrect component import in docs (#2709)

Signed-off-by: Marten Bjork <[email protected]>

Author: martenbjork

docs/src/app/(public)/(content)/react/components/preview-card/page.mdx

@@ -20,7 +20,7 @@
 Import the component and assemble its parts:
 
 ```jsx title="Anatomy"
-import { PreviewCard } from '@base-ui-components/react/previewCard';
+import { PreviewCard } from '@base-ui-components/react/preview-card';
 
 <PreviewCard.Root>
   <PreviewCard.Trigger />