Add documentation for WLM support (#1278) #4291

Job	Run time
check-formating	1m 16s
unit-tests	5m 35s
build-operator-image	7m 16s
vulnerability-scan	57s
smoke-tests (basic)	1h 13m 29s
smoke-tests (appframeworks1)	1h 36m 58s
smoke-tests (managerappframeworkc3)	4h 6m 35s
smoke-tests (managerappframeworkm4)	2h 38m 35s
smoke-tests (managersecret)	1h 42m 34s
smoke-tests (managermc)	1h 15m 18s
push-latest	32s
	12h 49m 5s

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