message: Remove duplicate of populateExchange import
diff: @@ -28,7 +28,7 @@ Afterwards we can set the `populateExchange` up by adding it to our list of `exc
  client options.
  ```ts
  -import { createClient, dedupExchange, populateExchange, fetchExchange } from '@urql/core';
  +import { createClient, dedupExchange, fetchExchange } from '@urql/core';
  import { populateExchange } from '@urql/exchange-populate';
  const client = createClient({
  