Resync bson-corpus array.json to fix duplicate test names

JAVA-3447

Author: jstewart148

bson/src/test/resources/bson/array.json

@@ -14,16 +14,22 @@
             "canonical_extjson": "{\"a\" : [{\"$numberInt\": \"10\"}]}"
         },
         {
-            "description": "Single Element Array with index set incorrectly",
+            "description": "Single Element Array with index set incorrectly to empty string",
             "degenerate_bson": "130000000461000B00000010000A0000000000",
             "canonical_bson": "140000000461000C0000001030000A0000000000",
             "canonical_extjson": "{\"a\" : [{\"$numberInt\": \"10\"}]}"
         },
         {
-            "description": "Single Element Array with index set incorrectly",
+            "description": "Single Element Array with index set incorrectly to ab",
             "degenerate_bson": "150000000461000D000000106162000A0000000000",
             "canonical_bson": "140000000461000C0000001030000A0000000000",
             "canonical_extjson": "{\"a\" : [{\"$numberInt\": \"10\"}]}"
+        },
+        {
+            "description": "Multi Element Array with duplicate indexes",
+            "degenerate_bson": "1b000000046100130000001030000a000000103000140000000000",
+            "canonical_bson": "1b000000046100130000001030000a000000103100140000000000",
+            "canonical_extjson": "{\"a\" : [{\"$numberInt\": \"10\"}, {\"$numberInt\": \"20\"}]}"
         }
     ],
     "decodeErrors": [