"Property Paths" is a reference page and belongs under Reference (especially since both ESC and IaC use it). Property paths are available in the following resource options: ignoreChanges, replaceOnChanges, hideDiffs, additionalSecrets; pulumi config set, ESC Interpolations; and Resource Search in Insights.
We should ensure that we have bi-directional links for each of these, but note on the Property Paths reference page that the list is not necessarily exhaustive (since not everyone would know to update this page).