Update site metadata and polish some exercises.

data/workshop/exercise1.mdx

@@ -12,7 +12,6 @@ Welcome to the OpenShift 4 Disconnected security & compliance workshop! Here you
 
 - [Red Hat Advanced Cluster Security](https://www.redhat.com/en/technologies/cloud-computing/openshift/advanced-cluster-security-kubernetes)
 - [Red Hat OpenShift Compliance Operator](https://www.redhat.com/en/blog/a-guide-to-openshift-compliance-operator-best-practices)
-- [Red Hat Developer Hub](https://developers.redhat.com/rhdh/overview)
 
 To level set, [Red Hat OpenShift](https://www.redhat.com/en/technologies/cloud-computing/openshift) is a unified platform to build, modernize, and deploy applications at scale. OpenShift supports running in disconnected networks, though this does change the way the cluster operates because key ingredients like container images, operator bundles, and helm charts must be brought into the environment from the outside world via mirroring.
 
@@ -23,7 +22,7 @@ There are of course many different options for installing OpenShift in a restric
 
 ## 1.1 - Reserve a lab environment
 
-An OpenShift `4.14` cluster has already been provisioned for you to complete these excercises. To reserve an environment go to [insert link here](https://sheets.google.com).
+An OpenShift `4.14` cluster has already been provisioned for you to complete these excercises. To reserve an environment go to [this Google Sheets spreadsheet](https://docs.google.com/spreadsheets/d/1tddgRA6suefTaITyRx87IoRCfCJ7El9Hdr6HB8K7Mvo/edit?usp=sharing). Update your name next to an `Available` environment and change the status to `Allocated`.
 
 <Zoom>
 |![workshop](/static/images/compliance/environments.png)                        |