Broken links in day-0 prepare-account documentation

Visit https://cloudnativetoolkit.dev/getting-started-day-0
The IBM Cloud IAM docs must have moved to a new location.
There are broken links:
- `Note: IBM Cloud has multiple **account management services**, `
Points to https://cloud.ibm.com/docs/iam?topic=iam-account-services
- `Create a new **access group**`
Points to https://cloud.ibm.com/docs/iam?topic=iam-account_setup
- `Manage the IBM Cloud Container Registry (used as the environment’s **image registry**)`
Points to https://cloudnativetoolkit.dev/tools/image-registry
- `Upgrade the service plan for the **image registry** so that is has unlimited capacity for images.`
Points to https://cloudnativetoolkit.dev/tools/image-registry
- `**Create an API key** and download each key to a file. `
Points to https://cloud.ibm.com/docs/iam?topic=iam-userapikey#create_user_key
- `Log into the IBM Cloud CLI **using the functional ID key** created by the account owner`
Points to https://cloud.ibm.com/docs/iam?topic=iam-federated_id#api_key
- `Create a new **access group** named something like`
Points to https://cloud.ibm.com/docs/iam?topic=iam-account_setup

There are more broken links on this page but I'm tired of copy / paste. A review of all the links is necessary.