[stable31] docs(caldav): improve documentation of CalDavBackend::getCalendarsForUserCount #25545

Job	Run time
changes	9s
integration-sqlite (comments_features, 8.1, stable31, stable31)	1m 59s
integration-sqlite (dav_features, 8.1, stable31, stable31)	8m 53s
integration-sqlite (collaboration_features, 8.1, stable31, stable31)	2m 3s
integration-sqlite (federation_features, 8.1, stable31, stable31)	4m 20s
integration-sqlite (features, 8.1, stable31, stable31)	8m 49s
integration-sqlite (--tags ~@large files_features, 8.1, stable31, stable31)	13m 10s
integration-sqlite (filesdrop_features, 8.1, stable31, stable31)	1m 26s
integration-sqlite (file_conversions, 8.1, stable31, stable31)	2m 13s
integration-sqlite (capabilities_features, 8.1, stable31, stable31)	2m 19s
integration-sqlite (sharing_features, 8.1, stable31, stable31)	12m 30s
integration-sqlite (setup_features, 8.1, stable31, stable31)	1m 31s
integration-sqlite (ldap_features, 8.1, stable31, stable31)	2m 37s
integration-sqlite (openldap_features, 8.1, stable31, stable31)	1m 45s
integration-sqlite (remoteapi_features, 8.1, stable31, stable31)	1m 36s
integration-sqlite (openldap_numerical_features, 8.1, stable31, stable31)	2m 2s
integration-sqlite (videoverification_features, 8.1, stable31, stable31)	6m 10s
integration-sqlite (sharees_features, 8.1, stable31, stable31)	4m 40s
integration-sqlite-summary	5s
	1h 18m 17s

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