[BUG]: Old version of node operation guidelines

[elinkronander]

Bug summary

Old version of node operation guidelines is linked in several places

To reproduce

Go to https://ega-archive.github.io/FEGA-onboarding/topics/technical-operational/#1-identify-node-requirements, click on link for The FEGA Node Operations Guidelines under Standards heading

Observed behaviour

This links to version 2 of the FEGA Node operation guidelines

Expected behaviour

Should link to version 2.1 of the node operations guidelines [https://ega-archive.org/assets/files/Federated-EGA-Node-Operations-v2.1.pdf]

Additional context

The guidelines are linked in at least one more place so there might be more links to update