docs(start): fix broken url to the start-counter example (#3795)

Fix wrong url for start-counter example

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Co-authored-by: Sean Cassiere <33615041+SeanCassiere@users.noreply.github.com>

Author: radiantwave

docs/start/framework/react/quick-start.md

@@ -24,7 +24,7 @@ TanStack Start has load of examples to get you started. Pick one of the examples
 
 - [Basic](../examples/start-basic) (start-basic)
 - [Basic + Auth](../examples/start-basic-auth) (start-basic-auth)
-- [Basic + Counter](../examples/start-basic-counter) (start-basic-counter)
+- [Counter](../examples/start-counter) (start-counter)
 - [Basic + React Query](../examples/start-basic-react-query) (start-basic-react-query)
 - [Clerk Auth](../examples/start-clerk-basic) (start-clerk-basic)
 - [Convex + Trellaux](../examples/start-convex-trellaux) (start-convex-trellaux)