docs: Fix link

[calvincestari]

Fixing a broken link introduced in #543.

[svc-apollo-docs]

✅ Docs Preview Ready

Configuration

{
  "repoOverrides": {
    "apollographql/apollo-ios-dev@main": {
      "remote": {
        "owner": "apollographql",
        "repo": "apollo-ios-dev",
        "branch": "docs/fix-link-to-normalized-cache"
      }
    }
  }
}

Name	Link
Commit	aad53dd
Preview	https://www.apollographql.com/docs/deploy-preview/77de7beada829bc969f1
Build ID	77de7beada829bc969f1
File Changes	0 new, 1 changed, 0 removed * (developer-tools)/ios/(latest)/fetching/queries.mdx
Pages	1

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1 pages published. Build will be available for 30 days.

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