Oscap oval url hotfix

Description

Update URL in scap security guide to point to

Risk

Low - stage is already broken

Rollback Plan

Open another hotfix or revert MR

Testing

https://code-ib-zelda.staging.dso.mil/dsop/Kenn/static/-/pipelines/5070 https://code-ib-zelda.staging.dso.mil/dsop/Kenn/bci-base/-/pipelines/5071 https://code-ib-zelda.staging.dso.mil/dsop/Kenn/ubi8/-/pipelines/5072