Update resolvers.md

docs/source/tutorial/resolvers.md

@@ -253,14 +253,6 @@ Mission: {
 },
 ```
 
-_src/schema.js_
-```js
-  type Mission {
-    # ... with rest of schema
-    missionPatch(mission: String, size: PatchSize): String
-  }
-```
-
 The first argument passed into our resolver is the parent, which refers to the mission object. The second argument is the size we pass to our `missionPatch` field, which we use to determine which property on the mission object we want our field to resolve to.
 
 Now that we know how to add resolvers on types other than `Query` and `Mission`, let's add some more resolvers to the `Launch` and `User` types. Copy this code into your resolver map:
@@ -269,7 +261,7 @@ _src/resolvers.js_
 
 ```js
 Launch: {
-  isBooked: async (launch, _, { dataSources }) =>
+  isBooked: (launch, _, { dataSources }) =>
     dataSources.userAPI.isBookedOnLaunch({ launchId: launch.id }),
 },
 User: {