[security-services] ISSUE: core-27: section 7.1.1 SAML Artifact

(This fix to core-27 complements the fix to bindings-model-11 suggested in this
message..

ISSUE: bindings-model-11: SSOAssertion'sConfirmationMethod set to SAMLArtifact? 
http://lists.oasis-open.org/archives/security-services/200203/msg00034.html
)


change line 1556 of core-27:    s/can present/presented/



thanks,

JeffH