message: Fix a couple documentation typos.
diff: @@ -214,7 +214,7 @@ class TodoForm extends Component {
  const WithMutation = () => (
  <Mutation query={addTodo}>
  - {({ executeMutation }) => <TodoForm addTodo={addTodo} />
  + {({ executeMutation }) => <TodoForm addTodo={executeMutation} />
  </Mutation>
  );
  ```
  @@ -248,7 +248,7 @@ class TodoForm extends Component {
  const WithMutation = () => (
  <Mutation query={addTodo}>
  - {({ error, executeMutation }) => <TodoForm error={error} addTodo={addTodo} />
  + {({ error, executeMutation }) => <TodoForm error={error} addTodo={executeMutation} />
  </Mutation>
  );
  ```
  @@ -407,7 +407,10 @@ const getTodos = `
  `;
  const TodoList = ({ limit = 10 }) => {
  - const [query, executeQuery] = useQuery({ query: getTodos });
  + const [query, executeQuery] = useQuery({
  + query: getTodos,
  + variables: { limit }
  + });
  if (!query.data) {
  return null;
  