The SCI is an ISO Standard - what ISO number does it have - can it be made explicit in the README?

Hi folks,

I just came off a call with someone when talking about the SCI being an ISO standard, and I was asked which ISO number the SCI standard had.

I _think_ the ISO number might be 21031:2024, based on the preview linked below:

https://www.iso.org/obp/ui/en/#iso:std:iso-iec:21031:ed-1:v1:en

...and a screenshot on the ISO website:


However, I couldn't find any real mention of this number in the main github repo, nor in the article about acheiving ISO status:

https://greensoftware.foundation/articles/sci-specification-achieves-iso-standard-status

Would you accept a PR explicitly stating the ISO number that has been issued to this work, and perhaps linking to the relevant ISO page where curious people can see it?

I have no interest in paying for PDF of a standard that is freely avaiable for me to download, but it might be relevant for others, and it took me a bit of research online to find what the ISO number might be.

I'd like to others (and my future self) the hassle of looking up the number if possible.