Use class simple name instead of name for fixing references

Author: Thomas Draier

src/main/java/graphql/annotations/DefaultTypeFunction.java

@@ -306,7 +306,7 @@ private class ObjectFunction implements TypeFunction {
         @Override
         public String getTypeName(Class<?> aClass, AnnotatedType annotatedType) {
             GraphQLName name = aClass.getAnnotation(GraphQLName.class);
-            return toGraphqlName(name == null ? aClass.getName() : name.value());
+            return toGraphqlName(name == null ? aClass.getSimpleName() : name.value());
         }
 
         @Override