Update the link URLs under "Policy Reference" in SG.5.03.
This makes the link URLs at https://about.gitlab.com/handbook/engineering/security/guidance/SG.5.03_security_roles_and_responsibilities.html#policy-reference root-relative.
This makes the link URLs at https://about.gitlab.com/handbook/engineering/security/guidance/SG.5.03_security_roles_and_responsibilities.html#policy-reference root-relative.