[DOCS] Clarified xpack.monitoring.enabled setting (elastic/x-pack-elasticsearch#4384)
[DOCS] Clarified xpack.monitoring.enabled setting (elastic/x-pack-elasticsearch#4384)

Original commit: elastic/x-pack-elasticsearch@e962c1f7bec83bbb5494a49492961c32b7347b4e

strapdata/elassandra,vroyer/elassandra,strapdata/elassandra,vroyer/elassandra,vroyer/elassandra,strapdata/elassandra,strapdata/elassandra,strapdata/elassandra