minor tweak

Author: Rich Harris

content/tutorial/01-svelte/08-stores/04-derived-stores/README.md

@@ -12,4 +12,4 @@ export const elapsed = derived(
 );
 ```
 
-> It's possible to derive a store from multiple inputs, and to explicitly `set` a value instead of returning it (which is useful for deriving values asynchronously). Consult the [API reference](https://svelte.dev/docs#run-time-svelte-store-derived) for more information.
+> It's possible to derive a store from multiple input stores, and to explicitly `set` a value instead of returning it (which is useful for deriving values asynchronously). Consult the [API reference](https://svelte.dev/docs#run-time-svelte-store-derived) for more information.