fix(core) javadoc errors #51

Job	Run time
Compile templates and cache kotlinc output	3m 49s
FreeBSD Cross	4m 16s
Linux (x64)	6m 9s
macOS (x64)	11m 8s
Linux Cross (arm32)	3m 34s
macOS (arm64)	3m 25s
Linux Cross (arm64)	3m 50s
Linux Cross (ppc64le)	4m 2s
Windows (x86)	4m 13s
Linux Cross (riscv64)	3m 39s
Windows (x64)	6m 23s
Windows (arm64)	3m 7s
	57m 35s

Provide feedback