fixes from apollographql/apollo-kotlin#5405

Thanks @BoD

Author: martinbonnin

nullability/v0.1/nullability-v0.1.graphql

@@ -24,7 +24,7 @@ Control over list items is done using the `level` argument:
 ```graphql
 type User {
     # friends is nullable but friends[0] is null only on errors
-    friends @nullOnlyOnError(level: 1)
+    friends: [User] @nullOnlyOnError(level: 1)
 }
 ```
 
@@ -46,7 +46,7 @@ By default, the first GraphQL error throws and fails the whole response.
 starting at 0 if there is no list.
 If level is null, the modifier is applied to all levels
 """
-directive @catch(if: Boolean! = true, to: CatchTo! = RESULT, level: Int = null) repeatable on FIELD
+directive @catch(if: Boolean! = true, to: CatchTo! = RESULT, level: Int = null) repeatable on FIELD | SCHEMA
 
 enum CatchTo {
     NULL,