cmake/traceparser: fix typo #16681

Job	Run time
Arch Linux	2m 8s
CUDA (on Arch)	2m 9s
Arch / PyPy	2m 10s
Fedora	2m 19s
Gentoo	2m 8s
OpenSUSE	2m 14s
Ubuntu Rolling (gcc, g++)	1s
Ubuntu Rolling (--unity=on -Ddefault_library=static, --no-unittests, gcc, g++)	1m 16s
Ubuntu Rolling (-Ddefault_library=both, --no-unittests, gcc, g++)	1m 20s
Ubuntu Bionic	2m 10s
Ubuntu Rolling (clang, clang++)	1s
Ubuntu Rolling (--unity=on, --no-unittests, clang, clang++)	26s
Ubuntu Rolling (--cross ubuntu-armhf.json --cross linux-mingw-w64-64bit.json, 0, gcc, g++)	1m 46s
Ubuntu Rolling (--cross ubuntu-armhf.json --cross linux-mingw-w64-64bit.json, --unity=on, gcc, g++)	1m 46s
	21m 54s

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