fixup installation of documents
fixup installation of documents

since they moved from .wiki extension to .adoc
also add more documents to be installed
fixes #23

Yubico/yubikey-val,ahojjati/yubikey-val,Yubico/yubikey-val,ahojjati/yubikey-val,Yubico/yubikey-val,ahojjati/yubikey-val