Fix text about cortex community calls #10543

Job	Run time
build	4m 12s
test	16m 18s
CodeQL	6m 35s
lint	4m 18s
integration-configs-db	2m 33s
integration (requires_docker)	7m 2s
integration (integration_alertmanager)	3m 59s
integration (integration_backward_compatibility)	10m 23s
integration (integration_memberlist)	7m 52s
integration (integration_querier)	14m 56s
integration (integration_ruler)	5m 37s
integration (integration_query_fuzz)	5m 2s
deploy_website	0s
deploy	0s
	1h 28m 47s

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