changed a typo in variable name private_key_path for provider, and updated example to use baremetal_identity_availability_domain data source.
changed a typo in variable name private_key_path for provider, and
updated example to use baremetal_identity_availability_domain data
source.

oracle/terraform-provider-baremetal,oracle/terraform-provider-baremetal,MustWin/terraform-provider-baremetal,MustWin/terraform-provider-baremetal