Improve each_item_invalid_assignment error message

packages/svelte/tests/compiler-errors/samples/runes-invalid-each-binding/_config.js

@@ -4,6 +4,6 @@ export default test({
 	error: {
 		code: 'each_item_invalid_assignment',
 		message:
-			'Cannot reassign or bind to each block argument in runes mode. Use the array and index variables instead (e.g. `array[i] = value` instead of `entry = value`)'
+			'Cannot reassign or bind to each block argument in runes mode. Use the array and index variables instead (e.g. `bind:value={array[i]}` instead of `bind:value={entry}`)'
 	}
 });