Update urls

remove https://www.incidentresponse.org/playbooks/

README.md

@@ -247,7 +247,6 @@ Digital Forensics and Incident Response (DFIR) teams are groups of people in an
 * [Counteractive Playbooks](https://github.com/counteractive/incident-response-plan-template/tree/master/playbooks) - Counteractive PLaybooks collection.
 * [GuardSIght Playbook Battle Cards](https://github.com/guardsight/gsvsoc_cirt-playbook-battle-cards) - A collection of Cyber Incident Response Playbook Battle Cards
 * [IRM](https://github.com/certsocietegenerale/IRM) - Incident Response Methodologies by CERT Societe Generale.
-* [IR Workflow Gallery](https://www.incidentresponse.org/playbooks/) - Different generic incident response workflows, e.g. for malware outbreak, data theft, unauthorized access,... Every workflow consists of seven steps: prepare, detect, analyze, contain, eradicate, recover, post-incident handling. The workflows are online available or for download.
 * [PagerDuty Incident Response Documentation](https://response.pagerduty.com/) - Documents that describe parts of the PagerDuty Incident Response process. It provides information not only on preparing for an incident, but also what to do during and after. Source is available on [GitHub](https://github.com/PagerDuty/incident-response-docs).
 * [Phantom Community Playbooks](https://github.com/phantomcyber/playbooks) - Phantom Community Playbooks for Splunk but also customizable for other use.
 * [ThreatHunter-Playbook](https://github.com/OTRF/ThreatHunter-Playbook) - Playbook to aid the development of techniques and hypothesis for hunting campaigns.