Link to guidance on including infrastructure project identifiers in OCDS data

[duncandewhurst]

Once OC4IDS 0.9.2 is deployed we should include a link to the guidance on including project identifiers in OCDS.

We can add this to the reference to OC4IDS in linked standards

[mrshll1001]

@duncandewhurst 0.9.2 is deployed yes? If so this seems straightforward to prepare and I can add the link.

[jpmckinney]

Indeed :) We can use this link: https://standard.open-contracting.org/infrastructure/0.9/en/guidance/identifiers/#project-identifiers-in-ocds