DOCSP-35211 fix setIsSubset example (#6127) (#6185)

Author: ltran-mdb2

source/reference/operator/aggregation/setIsSubset.txt

@@ -103,7 +103,7 @@ The operation returns the following results:
 
    { "flowerFieldA" : [ "rose", "orchid" ], "flowerFieldB" : [ "rose", "orchid" ], "AisSubset" : true }
    { "flowerFieldA" : [ "rose", "orchid" ], "flowerFieldB" : [ "orchid", "rose", "orchid" ], "AisSubset" : true }
-   { "flowerFieldA" : [ "rose", "orchid" ], "flowerFieldB" : [ "rose", "blue", "jasmine" ], "AisSubset" : true }
+   { "flowerFieldA" : [ "rose", "orchid" ], "flowerFieldB" : [ "rose", "orchid", "jasmine" ], "AisSubset" : true }
    { "flowerFieldA" : [ "rose", "orchid" ], "flowerFieldB" : [ "jasmine", "rose" ], "AisSubset" : false }
    { "flowerFieldA" : [ "rose", "orchid" ], "flowerFieldB" : [ ], "AisSubset" : false }
    { "flowerFieldA" : [ "rose", "orchid" ], "flowerFieldB" : [ [ "rose" ], [ "orchid" ] ], "AisSubset" : false }