Update packages/svelte/messages/compile-errors/script.md

Co-authored-by: Simon H <[email protected]>

Author: Rich-Harris

packages/svelte/messages/compile-errors/script.md

@@ -48,7 +48,7 @@
 
 ## legacy_export_invalid
 
-> Cannot use `export let` in runes mode — use $props instead
+> Cannot use `export let` in runes mode — use `$props()` instead
 
 ## legacy_props_invalid