[www] Set Pike series state as End of Life
[www] Set Pike series state as End of Life

Pike transitioned to End of Life [1], this patch sets the status to EOL
in docs.openstack.org.

[1] https://lists.openstack.org/pipermail/openstack-discuss/2022-July/029769.html

Change-Id: Ifd6aa5ecad14749f3f347a19f944634d1f220d53

openstack/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals