Fix Cell relationship with object-group

Fixed a typo in DbEdgeRule

Issue-ID: AAI-3625
Signed-off-by: aleem.raja@t-systems.com <aleem.raja@t-systems.com>
Change-Id: Iaece6541ae2d35a4f9b260b8f33686db4ac2214e
diff --git a/aai-schema/src/main/resources/onap/dbedgerules/v27/DbEdgeRules_v27.json b/aai-schema/src/main/resources/onap/dbedgerules/v27/DbEdgeRules_v27.json
index e649dba..24c88f1 100644
--- a/aai-schema/src/main/resources/onap/dbedgerules/v27/DbEdgeRules_v27.json
+++ b/aai-schema/src/main/resources/onap/dbedgerules/v27/DbEdgeRules_v27.json
@@ -482,7 +482,7 @@
         },
 	{
             "from": "cell",
-            "to": "object-groups",
+            "to": "object-group",
             "label": "org.onap.relationships.inventory.MemberOf",
             "direction": "OUT",
             "multiplicity": "MANY2MANY",