Fixing warning in command SubtractAssetQuantity, removing unnecessarily includes, small documentation change #3156

Job	Run time
Pull requests from forks should use other workflow	2s
pr_comment_reaction_rocket	0s
Check if github workflows were properly made from sources	8s
generate_matrixes	8s
prepare-macos-env	3s
Docker-iroha-builder	1m 26s
prepare-windows-env	3s
build-W	0s
build-M (macos clang Debug normal)	1h 22m 49s
build-UD	0s
build-UR	0s
docker-D	0s
docker-R	0s
	1h 24m 39s

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