Fix minor issues in book quickstart (#349) #813

Job	Run time
rustdoc (cucumber-codegen)	24s
clippy	41s
rustdoc (cucumber)	57s
feature (<none>)	36s
MSRV (1.81.0, cucumber-codegen, ubuntu)	1m 14s
feature (macros)	36s
MSRV (1.81.0, cucumber-codegen, macOS)	1m 15s
rustfmt	13s
feature (timestamps)	32s
MSRV (1.81.0, cucumber-codegen, windows)	1m 56s
feature (output-json)	34s
test (cucumber-codegen, stable, ubuntu)	50s
MSRV (1.81.0, cucumber, ubuntu)	3m 8s
feature (output-junit)	36s
test (cucumber-codegen, stable, macOS)	50s
test (Book, ubuntu)	5m 14s
MSRV (1.81.0, cucumber, macOS)	2m 25s
feature (libtest)	33s
test (cucumber-codegen, stable, windows)	2m 34s
test (Book, macOS)	5m 18s
MSRV (1.81.0, cucumber, windows)	4m 31s
feature (tracing)	32s
test (cucumber-codegen, beta, ubuntu)	54s
test (Book, windows)	7m 33s
test (cucumber-codegen, beta, macOS)	59s
test (cucumber-codegen, beta, windows)	1m 37s
test (cucumber-codegen, nightly, ubuntu)	1m 23s
test (cucumber-codegen, nightly, macOS)	1m 37s
test (cucumber-codegen, nightly, windows)	2m 49s
test (cucumber, stable, ubuntu)	2m 55s
test (cucumber, stable, macOS)	2m 57s
test (cucumber, stable, windows)	4m 45s
test (cucumber, beta, ubuntu)	3m 3s
test (cucumber, beta, macOS)	3m 32s
test (cucumber, beta, windows)	4m 43s
test (cucumber, nightly, ubuntu)	3m 22s
test (cucumber, nightly, macOS)	3m 41s
test (cucumber, nightly, windows)	5m 10s
deploy (Book)	0s
pr	0s
release (GitHub)	0s
publish (crates.io)	0s
	1h 26m 29s

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