[PATCH] doc: sandbox: fix typos

[Quentin Schulz]

Hi Lukas,

On 10/9/25 12:18 PM, Lukas Zirpel wrote:
> [You don't often get email from lukas at zirpel.de. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ]
> 
> Fix two typos in the sandbox docs.
> 
> Signed-off-by: Lukas Zirpel <lukas at zirpel.de>

Reviewed-by: Quentin Schulz <quentin.schulz at cherry.de>

Thanks!
Quentin