[docs-scanner] Incorrect prerequisite list for checking pull limits

[docker-agent]

File: content/manuals/docker-hub/usage/pulls.md

Issue

The note before the "View pull rate and limit" instructions lists incorrect prerequisites:

To check your limits, you need curl, grep, and jq installed.

However, the actual commands shown in the section only use curl and jq. The grep tool is never used in any of the provided commands:

$ TOKEN=$(curl "https://auth.docker.io/token?service=registry.docker.io&scope=repository:ratelimitpreview/test:pull" | jq -r .token)
$ TOKEN=$(curl --user 'username:password' "https://auth.docker.io/token?service=registry.docker.io&scope=repository:ratelimitpreview/test:pull" | jq -r .token)
$ curl --head -H "Authorization: Bearer $TOKEN" https://registry-1.docker.io/v2/ratelimitpreview/test/manifests/latest

Suggested fix

Update the note to only list the tools that are actually required:

> [!NOTE]
>
> To check your limits, you need `curl` and `jq` installed.

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Found by nightly documentation freshness scanner