Update site/content/docs/01-component-format.md

site/content/docs/01-component-format.md

@@ -109,7 +109,7 @@ Update expressions (`count += 1`) and property assignments (`obj.x = y`) have th
 
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-Because Svelte's change tracking is based on assignments, using array methods like `.push()` and `.splice()` won't automatically trigger updates. A subsequent assignment is required to trigger the update. This and more details can also be found in the [tutorial](/tutorial/updating-arrays-and-objects).
+Because Svelte's reactivity is based on assignments, using array methods like `.push()` and `.splice()` won't automatically trigger updates. A subsequent assignment is required to trigger the update. This and more details can also be found in the [tutorial](/tutorial/updating-arrays-and-objects).
 
 ```sv
 <script>