[Doc] Rename 'Interactions with JanusGraph' section to 'JanusGraph Basics' #3948

Job	Run time
build-all	1m 39s
tests (hbase, -Dtest="*/diskstorage/hbase/", hbase2-diskstorage, 8)	22m 48s
tests (hbase, -Dtest="*/graphdb/hbase/", hbase2-graphdb, 8)	32m 10s
tests (hbase, -Dtest="*/hadoop/", hbase2-hadoop, 8)	9m 29s
tests (hbase, -Pjava-11, -Dtest="*/diskstorage/hbase/", hbase2-diskstorage, 11)	23m 1s
tests (hbase, -Pjava-11, -Dtest="*/graphdb/hbase/", hbase2-graphdb, 11)	37m 4s
tests (hbase, -Pjava-11, -Dtest="*/hadoop/", hbase2-hadoop, 11)	14m 10s
	2h 20m 21s

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