4.x: Fix sitegen config substitutions #774

Job	Run time
shellcheck	3m 8s
build	5m 15s
checkstyle	3m 28s
copyright	3m 13s
vscode-ext	3m 52s
spotbugs	5m 27s
javadoc	4m 5s
cli/linux-amd64	4m 37s
cli/windows-amd64	6m 0s
tests/cli-linux	5m 7s
tests/cli-functional-linux	6m 32s
cli/darwin-amd64	7m 16s
tests/archetype-linux	4m 56s
tests/linker-linux	4m 48s
tests/others-linux	6m 6s
tests/cli-windows	5m 56s
tests/cli-functional-windows	7m 35s
tests/archetype-windows	6m 3s
tests/linker-windows	5m 23s
tests/others-windows	7m 52s
cli/binaries	4s
tests/results	4s
gate	1s
	1h 46m 48s

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