[fix] - Compact doc typo #15848

Job	Run time
Thanos unit tests	11m 13s
Go build with -tags=stringlabels	39s
Check misspelled words	10s
Go build for different platforms	9m 28s
Thanos end-to-end tests (8, 0)	4m 47s
Thanos end-to-end tests (8, 1)	3m 55s
Linters (Static Analysis) for Go	2m 52s
Thanos end-to-end tests (8, 2)	3m 45s
Thanos end-to-end tests (8, 3)	4m 14s
Thanos end-to-end tests (8, 4)	7m 46s
Thanos end-to-end tests (8, 5)	4m 11s
Thanos end-to-end tests (8, 6)	4m 54s
Thanos end-to-end tests (8, 7)	3m 59s
	1h 1m 53s

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