docs: Update description of karpenter `node_iam_role_use_name_prefix` #1864

Job	Run time
Collect workflow inputs	2s
Max TF pre-commit	1m 27s
Min TF pre-commit (.)	22s
Min TF pre-commit (./tests/eks-fargate-profile)	25s
Min TF pre-commit (./tests/eks-managed-node-group)	24s
Min TF pre-commit (./tests/fast-addons)	26s
Min TF pre-commit (./tests/self-managed-node-group)	26s
Min TF pre-commit (./tests/eks-hybrid-nodes)	21s
Min TF pre-commit (./tests/user-data)	14s
Min TF pre-commit (./examples/eks-managed-node-group)	24s
Min TF pre-commit (./examples/karpenter)	24s
Min TF pre-commit (./examples/self-managed-node-group)	23s
Min TF pre-commit (./examples/eks-hybrid-nodes)	31s
Min TF pre-commit (./examples/eks-auto-mode)	23s
Min TF pre-commit (./modules/hybrid-node-role)	21s
Min TF pre-commit (./modules/fargate-profile)	23s
Min TF pre-commit (./modules/eks-managed-node-group)	25s
Min TF pre-commit (./modules/karpenter)	23s
Min TF pre-commit (./modules/self-managed-node-group)	21s
Min TF pre-commit (./modules/aws-auth)	12s
	8m 17s

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