Update 12.10 dropdown to match that of 14.4

Resolves part of: #1106 (closed).

We don't have automation for updating 12.10 documentation version menu, so this MR updates it manually.

See: http://eread-update-12-10-for-release-14-4.178.62.207.141.nip.io/archives/, and the version menu in the preview.