Update the link URLs under "Policy Reference" on the SYS.2.07 page.
This makes the link URLs at https://about.gitlab.com/handbook/engineering/security/guidance/SYS.2.07_system_security_monitoring.html#policy-reference root-relative.
cc @ltrbojevic
This makes the link URLs at https://about.gitlab.com/handbook/engineering/security/guidance/SYS.2.07_system_security_monitoring.html#policy-reference root-relative.
cc @ltrbojevic