message: Fix typo in `docs/basics/core.md`.
  * Fix typo in `docs/basics/core.md`.
  Change `urql` to `@urql/core` in the import statement.
  * Fix import statement typo.
diff: @@ -134,7 +134,7 @@ The `@urql/core` package exports a function called `createClient` which we can u
  create the GraphQL client. This central `Client` manages all of our GraphQL requests and results.
  ```js
  -import { createClient } from 'urql';
  +import { createClient } from '@urql/core';
  const client = createClient({
  url: 'http://localhost:3000/graphql',
  @@ -172,7 +172,7 @@ and how to cache data in a certain order. By default, this will be populated wit
  `defaultExchanges`.
  ```js
  -import { createClient, defaultExchanges } from 'urql';
  +import { createClient, defaultExchanges } from '@urql/core';
  const client = createClient({
  url: 'http://localhost:3000/graphql',
  