PERL-1101 Docs for count_documents must mention estimated_document_count
PERL-1101 Docs for count_documents must mention estimated_document_count

xdg/mongo-perl-driver,dagolden/mongo-perl-driver,dagolden/mongo-perl-driver,xdg/mongo-perl-driver,dagolden/mongo-perl-driver,xdg/mongo-perl-driver,dagolden/mongo-perl-driver,mongodb/mongo-perl-driver,mongodb/mongo-perl-driver,mongodb/mongo-perl-driver