I don’t know where to go for documentation bugs but at the provided link, under the section " Metalness and Specular Response (Non-Metalness and Parameterization)" Albedo is misspelled as Alebdo (italicized):
Metalness is emulated using the Substrate Metalness-To-DiffuseAlbedo-F0 Helper node. It takes BaseColor, Specular, and Metallic values as inputs and converts them to values which map to DiffuseAlebdo and F0 on the Substrate Slab.