Fix `.feature` names in "Quickstart" chapter of Book (#350, #349) #815

Job	Run time
clippy	43s
rustdoc (cucumber-codegen)	23s
MSRV (1.81.0, cucumber-codegen, ubuntu)	1m 5s
feature (<none>)	31s
MSRV (1.81.0, cucumber-codegen, macOS)	1m 0s
feature (macros)	38s
MSRV (1.81.0, cucumber-codegen, windows)	1m 59s
rustfmt	12s
feature (timestamps)	40s
rustdoc (cucumber)	57s
MSRV (1.81.0, cucumber, ubuntu)	3m 19s
feature (output-json)	31s
MSRV (1.81.0, cucumber, macOS)	3m 0s
feature (output-junit)	31s
feature (libtest)	32s
MSRV (1.81.0, cucumber, windows)	4m 30s
feature (tracing)	32s
test (Book, ubuntu)	5m 4s
test (cucumber-codegen, stable, ubuntu)	48s
test (Book, macOS)	5m 30s
test (Book, windows)	7m 31s
test (cucumber-codegen, stable, macOS)	49s
test (cucumber-codegen, stable, windows)	2m 42s
test (cucumber-codegen, beta, ubuntu)	57s
test (cucumber-codegen, beta, macOS)	1m 3s
test (cucumber-codegen, beta, windows)	1m 43s
test (cucumber-codegen, nightly, ubuntu)	1m 23s
test (cucumber-codegen, nightly, macOS)	1m 30s
test (cucumber-codegen, nightly, windows)	2m 36s
test (cucumber, stable, ubuntu)	2m 53s
test (cucumber, stable, macOS)	2m 46s
test (cucumber, stable, windows)	5m 9s
test (cucumber, beta, ubuntu)	3m 0s
test (cucumber, beta, macOS)	3m 15s
test (cucumber, beta, windows)	4m 21s
test (cucumber, nightly, ubuntu)	3m 21s
test (cucumber, nightly, macOS)	3m 26s
test (cucumber, nightly, windows)	5m 17s
deploy (Book)	9s
pr	0s
release (GitHub)	0s
publish (crates.io)	0s
	1h 26m 16s

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