fix(docs-next): label search button (#2247)

Author: dancormier

packages/stacks-docs-next/src/components/Search.svelte

@@ -47,5 +47,6 @@
 {#if searchEnabled}
 	<Button icon weight="clear" class="h:fc-blue-400 px0" onclick={openSearch}>
 		<Icon src={IconSearch} />
+		<span class="v-visible-sr">Search</span>
 	</Button>
-{/if}
+{/if}