The manual you show is not for the i3, so it seems that the contents of the kit vary per printer.
The i3 does not have the paste in the kit:
https://store.micro-swiss.com/collections/wanhao-i3/products/all-metal-hotend-with-slotted-cooling-block-for-wanhao-i3
But the 4S does:https://store.micro-swiss.com/collections/wanhao-duplicator-4s/products/micro-swiss-mk10-all-metal-hotend-kit
The manual you show is not for the i3, so it seems that the contents of the kit vary per printer.
The i3 does not have the paste in the kit:
https://store.micro-swiss.com/collections/wanhao-i3/products/all-metal-hotend-with-slotted-cooling-block-for-wanhao-i3
But the 4S does:
https://store.micro-swiss.com/collections/wanhao-duplicator-4s/products/micro-swiss-mk10-all-metal-hotend-kit