Reduce confusion of unsubcribe function by moving its location from 8a to 8b which is closer to when it get's used

site/content/tutorial/08-stores/01-writable-stores/app-a/App.svelte

@@ -6,9 +6,6 @@
 
 	let count_value;
 
-	const unsubscribe = count.subscribe(value => {
-		count_value = value;
-	});
 </script>
 
 <h1>The count is {count_value}</h1>

site/content/tutorial/08-stores/01-writable-stores/text.md

@@ -25,5 +25,3 @@ function reset() {
 	count.set(0);
 }
 ```
-
-> The function of assigning subscribe to `unsubscribe` is explained in the next section.

site/content/tutorial/08-stores/02-auto-subscriptions/app-a/App.svelte

@@ -6,9 +6,7 @@
 
 	let count_value;
 
-	const unsubscribe = count.subscribe(value => {
-		count_value = value;
-	});
+	// declare unsubscribe here
 </script>
 
 <h1>The count is {count_value}</h1>

site/content/tutorial/08-stores/02-auto-subscriptions/text.md

@@ -2,10 +2,17 @@
 title: Auto-subscriptions
 ---
 
-The app in the previous example works, but there's a subtle bug — the `unsubscribe` function never gets called. If the component was instantiated and destroyed many times, this would result in a *memory leak*.
+The app in the previous example works, but there's a subtle bug — it is missing an `unsubscribe` function. If the component was instantiated and destroyed many times, this would result in a *memory leak*.
 
-One way to fix it would be to use the `onDestroy` [lifecycle hook](tutorial/ondestroy):
+Start by declaring `unsubscribe` in `App.svelte`:
 
+```js
+	const unsubscribe = count.subscribe(value => {
+		count_value = value;
+	});
+```
+
+Although you declared `unsubscribe`, it is never called. One way to fix it would be to use the `onDestroy` [lifecycle hook](tutorial/ondestroy):
 ```html
 <script>
 	import { onDestroy } from 'svelte';