docs (data fetching): fix typo in startTransition call (#79578)

Fix typo in useEffect hook when calling the startTransition hook.

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Co-authored-by: JJ Kasper <jj@jjsweb.site>

Author: bcdipesh

docs/01-app/03-building-your-application/02-data-fetching/03-server-actions-and-mutations.mdx

@@ -678,7 +678,7 @@ export default function ViewCount({ initialViews }: { initialViews: number }) {
   const [isPending, startTransition] = useTransition()
 
   useEffect(() => {
-    starTransition(async () => {
+    startTransition(async () => {
       const updatedViews = await incrementViews()
       setViews(updatedViews)
     })