add function comments and change wording to feats from vocab #5500

Job	Run time
check-nightly-ci	6s
changed-files / Check changed files	6s
checks / check-style	1m 9s
checks / other-checks	36s
devcontainer / amd64, 12.8, conda	3m 53s
devcontainer / amd64, 12.8, pip	3m 41s
wheel-build-libraft / compute-matrix	2s
conda-cpp-build / compute-matrix	3s
wheel-build-libraft / 11.8.0, 3.12, amd64, rockylinux8	2m 26s
wheel-build-libraft / 12.8.0, 3.12, amd64, rockylinux8	2m 25s
wheel-build-libraft / 11.8.0, 3.12, arm64, rockylinux8	2m 45s
wheel-build-libraft / 12.8.0, 3.12, arm64, rockylinux8	2m 47s
conda-cpp-build / 11.8.0, 3.10, amd64, rockylinux8	2m 12s
conda-cpp-build / 12.8.0, 3.10, amd64, rockylinux8	2m 22s
conda-cpp-build / 11.8.0, 3.10, arm64, rockylinux8	2m 27s
conda-cpp-build / 12.8.0, 3.10, arm64, rockylinux8	2m 27s
conda-python-build	1s
conda-cpp-checks	1s
conda-cpp-tests	1s
docs-build	1s
conda-python-tests	1s
wheel-build-raft-dask	1s
wheel-build-pylibraft	1s
wheel-tests-raft-dask	1s
wheel-tests-pylibraft	1s
pr-builder / run	1s
	29m 37s

Provide feedback