Update positional arguments in docs and create handlers

[jmetrikat]

No description provided.

[Copilot]

Pull request overview

This PR refactors the auth create command to use a positional argument instead of a flag-based approach, improving CLI usability by requiring the account name upfront rather than through an optional flag or interactive prompt. Additionally, it fixes a minor consistency issue in the apikey revoke command's error message.

Key changes:

• Converted auth create command from using --name flag to requiring <name> as a positional argument
• Removed interactive input prompts for account name
• Updated all documentation to reflect the new positional argument syntax

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
cmd/auth/create/create.go	Refactored to use positional argument via cmdutil.ExactArgs, removed --name flag and interactive input logic
cmd/auth/create/create_test.go	Updated tests to verify positional argument usage and removed obsolete flag tests
cmd/auth/apikey/revoke/revoke.go	Changed error message from "Id argument" to "id argument" for consistency with other commands
README.md	Updated documentation examples to show <name> positional argument syntax for auth create and apikey create commands

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