docs(README.md): don't return strings in example components to make them TS friendly (#86)

Author: nareshbhatia

README.md

@@ -94,7 +94,7 @@ const Dogs = () => {
  return <div>Loading...</div>;
  };
  if (error) {
- return `Error! ${error.message}`;
+ return <div>Error! {error.message}</div>;
  };
 
  return (
@@ -135,7 +135,7 @@ const GET_DOGS = gql`
 const Dogs = () => {
  const { data, error } = useQuery(GET_DOGS, { suspend: true });
  if (error) {
- return `Error! ${error.message}`;
+ return <div>Error! {error.message}</div>;
  }
 
  return (