Add missing extend_tolerance to add_consensus_text.

                MdConsensus::parse(text).map_err(|e| Error::from_netdoc(source.clone(), e))?;

            #[cfg(feature = "dirfilter")]

            let parsed = self.filter.filter_consensus(parsed)?;

            let parsed = self.config.tolerance.extend_tolerance(parsed);

            let now = self.rt.wallclock();

            let timely = parsed.check_valid_at(&now)?;

            let meta = ConsensusMeta::from_unvalidated(signedval, remainder, &timely);