Make `support/python/mkdocstrings_handlers/cxx/init.py` PEP 8 compliant (2 of 2) #6850

Job	Run time
build (windows-2019, Win32, v142, 17, Debug)	1m 9s
mingw (mingw64)	4m 13s
build (windows-2019, Win32, v142, 17, Release)	2m 45s
mingw (ucrt64)	4m 34s
build (windows-2019, Win32, v142, 17, -DBUILD_SHARED_LIBS=ON, Debug)	1m 45s
build (windows-2019, Win32, v142, 17, -DBUILD_SHARED_LIBS=ON, Release)	2m 4s
build (windows-2019, x64, v140, 14, Debug)	1m 33s
build (windows-2019, x64, v140, 14, Release)	2m 7s
build (windows-2019, x64, v141, 17, Debug)	1m 27s
build (windows-2019, x64, v141, 17, Release)	2m 19s
build (windows-2019, x64, v142, 17, Debug)	1m 17s
build (windows-2019, x64, v142, 17, Release)	2m 49s
build (windows-2019, x64, v142, 17, -DBUILD_SHARED_LIBS=ON, Debug)	1m 13s
build (windows-2019, x64, v142, 17, -DBUILD_SHARED_LIBS=ON, Release)	2m 36s
build (windows-2019, x64, v142, 20, Debug)	2m 22s
build (windows-2019, x64, v142, 20, Release)	2m 48s
build (windows-2022, x64, v143, Debug, 20)	1m 58s
	38m 59s

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