Issues with IBM Bluemix article

[iansk]

Review this PR and this topic: https://github.com/twistlock/docs/blob/Pubs-MV-patch-4/admin_guide/vulnerability_management/registry_scanning/scan_ibm_cloud_container_registry.adoc

There are a few 404s for all URLs that link to console.bluemix.net.

Also, in Steps 5 b and c

For example, if you use the us-south registry, enter registry.ng.bluemix.net.

Should be different. Potentially, this: The format is registry.<region>.icr.io, so for example, if you use the us-south registry, enter registry.us-south.icr.io
Namespaces are appended to the registry URL as follows: registry.<REGION>.bluemix.net/<NAMESPACE>

Should be different. Potentially this:

Namespaces are appended to the registry URL as follows: 
registry.<region>.icr.io/<namespace>