[docs] fixed cilium cni exclusive topic placement

[runitmisra]

The "CNI Exclusive" topic should come under "Configuring Cilium" instead of "Enabling Cilium ENI IPAM (IPv4 only)". Adjusted the placement of the topic.

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[rifelpet]

this should also not be within ### Enabling Cilium ENI IPAM (IPv4 only)

Suggested change

	#### Resources in Cilium
	### Resources in Cilium