asyncIterator method returning graphQL error; switched to asyncIterableIterator method per resource suggestions

Author: jayhcrawford

src/content/8/en/part8e.md

@@ -589,7 +589,7 @@ const resolvers = {
   // highlight-start
   Subscription: {
     personAdded: {
-      subscribe: () => pubsub.asyncIterator('PERSON_ADDED')
+      subscribe: () => pubsub.asyncIterableIterator('PERSON_ADDED')
     },
   },
   // highlight-end
@@ -610,7 +610,7 @@ There are only a few lines of code added, but quite a lot is happening under the
 ```js
 Subscription: {
   personAdded: {
-    subscribe: () => pubsub.asyncIterator('PERSON_ADDED')
+    subscribe: () => pubsub.asyncIterableIterator('PERSON_ADDED')
   },
 },
 ```

src/content/8/es/part8e.md

@@ -183,7 +183,7 @@ const pubsub = new PubSub() // highlight-line
   // highlight-start
   Subscription: {
     personAdded: {
-      subscribe: () => pubsub.asyncIterator(['PERSON_ADDED'])
+      subscribe: () => pubsub.asyncIterableIterator(['PERSON_ADDED'])
     },
   },
   // highlight-end

src/content/8/fi/osa8e.md

@@ -588,7 +588,7 @@ const resolvers = {
   // highlight-start
   Subscription: {
     personAdded: {
-      subscribe: () => pubsub.asyncIterator('PERSON_ADDED')
+      subscribe: () => pubsub.asyncIterableIterator('PERSON_ADDED')
     },
   },
   // highlight-end
@@ -608,7 +608,7 @@ Koodia on vähän mutta konepellin alla tapahtuu paljon. Tilauksen _personAdded_
 ```js
 Subscription: {
   personAdded: {
-    subscribe: () => pubsub.asyncIterator('PERSON_ADDED')
+    subscribe: () => pubsub.asyncIterableIterator('PERSON_ADDED')
   },
 },
 ```

src/content/8/zh/part8e.md

@@ -549,7 +549,7 @@ const pubsub = new PubSub() // highlight-line
   // highlight-start
   Subscription: {
     personAdded: {
-      subscribe: () => pubsub.asyncIterator(['PERSON_ADDED'])
+      subscribe: () => pubsub.asyncIterableIterator(['PERSON_ADDED'])
     },
   },
   // highlight-end