Update manual.
Update manual.

* doc/manual/scute.texi: Update some links. Refer to GnuPG 2
instead of GnuPG 2.0.

Signed-off-by: Damien Goutte-Gattat <3a260918a4ae0abc8ac3e544c6df1814a2596a5f@incenp.org>

gpg/scute,gpg/scute,gpg/scute