Fix typo in `target_cache_memory_usage` docs (#17825) #3589

Job	Run time
Build sdist	16s
Calculate list of debian distros	8s
Build wheels on ubuntu-20.04 for x86_64	9m 18s
Build wheels on ubuntu-20.04 for aarch64	12m 29s
Build wheels on macos-12 for x86_64	7m 58s
Build .deb packages (debian:sid)	9m 21s
Attach assets to release	1s
	39m 31s

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