Fix link to popover on React Aria homepage (#3762)

Author: devongovett

packages/dev/docs/pages/react-aria/index.mdx

@@ -246,7 +246,7 @@ A library of React Hooks that provides accessible UI primitives for your design
 </ExampleCard>
 
 <ExampleCard
-  url="useOverlayTrigger.html"
+  url="usePopover.html"
   title="Popover"
   description="A popover displays interactive content in context with a trigger element.">
   <Popover />