chore: improves description of --blob-amounts flag in txsim CLI #3905

Job	Run time
lint / golangci-lint	4m 9s
lint / golangci-lint	4m 9s
lint / yamllint	6s
lint / yamllint	6s
markdown-linter / markdown-link-check	1m 55s
markdown-linter / markdown-link-check	1m 56s
markdown-linter / markdown-lint	6s
markdown-linter / markdown-lint	6s
goreleaser / goreleaser-check	12s
goreleaser / goreleaser-check	12s
test / test	8m 34s
test / test	8m 34s
test / test-coverage	2m 12s
test / test-coverage	2m 12s
test / test-fuzz	5m 7s
test / test-fuzz	5m 7s
test / test-race	4m 8s
test / test-race	4m 8s
test / test-short	55s
test / test-short	55s
lint / hadolint / hadolint	8s
lint / hadolint / hadolint	8s
goreleaser / goreleaser	0s
goreleaser / goreleaser	0s
	55m 5s

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