Clarify --auth-method exception placement for ACR commands

[Copilot]

The CLI reference still implied --auth-method applied uniformly, even though acr registry list and acr registry repository list no longer support it. This updates the documentation so the exception is described where ACR commands are documented, matching the section-local pattern already used elsewhere.

• Documentation correction

  • Removed the ACR-specific --auth-method exception note from the Global Options section.
  • Added the note under Azure Container Registry (ACR) Operations, so the exception is visible at the point of use.

• Scope alignment

  • Kept the Global Options section generic (available for most commands) and moved command-specific behavior into the relevant command section.
  • Mirrors the existing section-local note style used for cloudarchitect design.

### Azure Container Registry (ACR) Operations

> [!NOTE]
> The `acr registry list` and `acr registry repository list` commands do not support `--auth-method`.

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