fix header link
fix header link

andrhamm/Singularity,hs-jenkins-bot/Singularity,andrhamm/Singularity,HubSpot/Singularity,HubSpot/Singularity,HubSpot/Singularity,andrhamm/Singularity,andrhamm/Singularity,HubSpot/Singularity,hs-jenkins-bot/Singularity,hs-jenkins-bot/Singularity,hs-jenkins-bot/Singularity,andrhamm/Singularity,HubSpot/Singularity,hs-jenkins-bot/Singularity