Move documentation to its correct location for this branch

The 1.1.1 branch has a different location for documentation, this is
the obvious result of a cherry-pick from there.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/6589)

diff --git a/doc/man3/X509_LOOKUP_meth_new.pod b/doc/crypto/X509_LOOKUP_meth_new.pod
similarity index 100%
rename from doc/man3/X509_LOOKUP_meth_new.pod
rename to doc/crypto/X509_LOOKUP_meth_new.pod

diff --git a/doc/man3/X509_cmp_time.pod b/doc/crypto/X509_cmp_time.pod
similarity index 100%
rename from doc/man3/X509_cmp_time.pod
rename to doc/crypto/X509_cmp_time.pod