Fix test failure in nom_recipes doc tests #1072

Job	Run time
Test minimal rust version	4m 35s
Bench	3m 10s
Test (stable)	50s
Test (beta)	3m 11s
Test (nightly)	48s
Check formatting	6s
Test (1.65.0)	5m 28s
Build documentation	53s
Coverage	5m 7s
Test (stable, --features "std")	52s
Test (stable, --no-default-features)	3m 0s
Test (stable, --no-default-features --features "alloc")	50s
Test (nightly, --no-default-features)	2m 59s
Test (nightly, --no-default-features --features "alloc")	48s
	32m 37s

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