Update corp_members.yml

Author: kellysantalucia

_data/corp_members.yml

@@ -651,6 +651,6 @@
   name: Cobalt  
   sortname: Cobalt
   image: /assets/images/corp-member-logo/Cobalt.png
-  URL: http://www.Cobalt.io
+  URL: https://www.cobalt.io/
   job_url:
   description: Cobalt combines talent and technology to provide end-to-end offensive security solutions that enable organizations to remediate risk across a dynamically changing attack surface. The innovators of Pentest as a Service, Cobalt empowers businesses to optimize their existing resources, access an on-demand community of trusted security experts, expedite remediation cycles, and share real-time updates and progress with internal teams to mitigate future risk.