tweak copy

site/content/tutorial/02-reactivity/04-updating-arrays-and-objects/text.md

@@ -2,7 +2,7 @@
 title: Updating arrays and objects
 ---
 
-Because Svelte's reactivity is triggered by assignments, using array methods like `push` and `splice` won't automatically trigger updates. For example, clicking the button doesn't do anything.
+Because Svelte's reactivity is triggered by assignments, using array methods like `push` and `splice` won't automatically cause updates. For example, clicking the button doesn't do anything.
 
 One way to fix that is to add an assignment that would otherwise be redundant:
 
@@ -23,4 +23,4 @@ function addNumber() {
 
 You can use similar patterns to replace `pop`, `shift`, `unshift` and `splice`.
 
-> Assignments to *properties* of arrays and objects — e.g. `obj.foo += 1` or `array[i] = x` — work the same way as assignments to the values themselves.
+> Assignments to *properties* of arrays and objects — e.g. `obj.foo += 1` or `array[i] = x` — work the same way as assignments to the values themselves.