✨ [Docs] Various documentation improvements #3172

Job	Run time
Build	5m 40s
test-broker	26m 1s
test-brokerAcl	17m 0s
test-device-management	11m 5s
test-tag	2m 23s
test-accountAndTranslator	6m 26s
test-datastore	14m 59s
test-device	4m 32s
test-connection	45m 15s
test-jobEngineOperations	8m 12s
test-jobsAndScheduler	3m 4s
test-jobService	7m 34s
test-jobsIntegration	8m 57s
test-security	5m 25s
test-user	3m 56s
test-userIntegration	7m 50s
test-userIntegrationBase	7m 11s
build-javadoc	10m 1s
junit-tests	8m 23s
test-api-auth	6m 17s
test-deviceRegistry	11m 36s
test-endpoint	7m 31s
test-jobEngineRestartOfflineDevice	9m 38s
test-jobEngineRestartOnlineDevice	9m 48s
test-jobEngineRestartOnlineDeviceSecondPart	8m 59s
test-jobEngineServiceStop	7m 16s
test-jobEngineStartOfflineDevice	10m 8s
test-jobEngineStartOnlineDevice	9m 49s
test-jobEngineStepDefinitions	7m 31s
test-RoleAndGroup	2m 43s
test-api-parsing	6m 15s
test-api-corsfilter	6m 29s
	5h 7m 54s

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