Fix missing parameterizations in cpp template #92

Job	Run time
build (js, macos-latest)	1m 33s
build (rust, ubuntu-latest)	4m 44s
build (rust, macos-latest)	6m 5s
build (jupyter, macos-latest)	2m 29s
build (jupyter, ubuntu-latest)	2m 5s
build (python, macos-latest)	47s
build (python, ubuntu-latest)	1m 9s
build (js, ubuntu-latest)	1m 10s
build (rustjswasm, macos-latest)	6m 25s
build (rustjswasm, ubuntu-latest)	6m 3s
	32m 30s

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