From `BUILDING.md`, `make moby-cli-link` causes `No rule to make target` error

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Location: https://github.com/docker/compose-ecs/blob/main/BUILDING.md#:~:text=help%20with%20this%3A-,make%20moby%2Dcli%2Dlink,-This%20will%20create

make moby-cli-link
make: *** No rule to make target 'moby-cli-link'.  Stop.

Running just make works.

Solutions:

• Remove it from the doc.
• Add the build target to the makefile.