Fix comment about debugging shapes #20

Job	Run time
omnibus compilations, trigger	3s
omnibus compilations, #4	25m 16s
omnibus compilations, #1	27m 56s
omnibus compilations, #2	32m 53s
omnibus compilations, #9	26m 34s
omnibus compilations, #11	26m 44s
omnibus compilations, #5	26m 19s
omnibus compilations, #10	27m 47s
omnibus compilations, #6	27m 38s
omnibus compilations, #7	32m 37s
omnibus compilations, #12	25m 2s
omnibus compilations, #8	27m 10s
omnibus compilations, #3	30m 6s
omnibus compilations, result	3s
	5h 36m 8s

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