fix(sb): class -> className

src/lib/components/tooltip/Overview.mdx

@@ -42,7 +42,7 @@ This example shows a **single Tooltip** with a custom delay.
 For grouped tooltips, use **`TooltipProvider`** to apply a shared delay across multiple tooltips.
 
 This example shows **multiple Tooltips** with a group delay.
-<div class="flex flex-row gap-2">
+<div className="flex flex-row gap-2">
 <TooltipProvider delay={{ open: 500, close: 100 }}>
   <Tooltip>
     <TooltipTrigger>