Fix missing parameterizations in cpp template #93

Job	Run time
build (js, macos-latest)	1m 14s
build (js, ubuntu-latest)	1m 8s
build (rustjswasm, ubuntu-latest)	5m 50s
build (rustjswasm, macos-latest)	6m 9s
build (python, ubuntu-latest)	38s
build (jupyter, macos-latest)	2m 10s
build (jupyter, ubuntu-latest)	1m 45s
build (rust, ubuntu-latest)	4m 53s
build (python, macos-latest)	40s
build (rust, macos-latest)	4m 52s
	29m 19s

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