build

Add comment block for adjoint test #1303

Job	Run time
ci (Release, linux gnu-10)	8m 56s
ci (Release, linux clang-12)	5m 42s
ci (Release, linux nvhpc-21.9)	15m 46s
ci (Release, linux intel-classic)	8m 51s
ci (Release, macos)	7m 16s
ci (Debug, linux gnu-10)	17m 39s
ci (Debug, linux clang-12)	7m 59s
ci (Debug, linux nvhpc-21.9)	33m 2s
ci (Debug, linux intel-classic)	17m 39s
ci (Debug, macos)	10m 4s
	2h 12m 54s

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