Fix doctest data (opensearch-project#1902)

Signed-off-by: Yury-Fridlyand <[email protected]>

doctest/test_data/nested_objects.json

@@ -1,4 +1,2 @@
-{"index":{"_id":"1"}}
 {"message":{"info":"a","author":"e","dayOfWeek":1},"comment":{"data":"ab","likes":3},"myNum":1,"someField":"b"}
-{"index":{"_id":"2"}}
 {"message":{"info":"b","author":"f","dayOfWeek":2},"comment":{"data":"aa","likes":2},"myNum":2,"someField":"a"}

doctest/test_data/wildcard.json

@@ -1,22 +1,11 @@
-{"index":{"_id":"0"}}
 {"Body":"test wildcard"}
-{"index":{"_id":"1"}}
 {"Body":"test wildcard in the end of the text%"}
-{"index":{"_id":"2"}}
 {"Body":"%test wildcard in the beginning of the text"}
-{"index":{"_id":"3"}}
 {"Body":"test wildcard in % the middle of the text"}
-{"index":{"_id":"4"}}
 {"Body":"test wildcard %% beside each other"}
-{"index":{"_id":"5"}}
 {"Body":"test wildcard in the end of the text_"}
-{"index":{"_id":"6"}}
 {"Body":"_test wildcard in the beginning of the text"}
-{"index":{"_id":"7"}}
 {"Body":"test wildcard in _ the middle of the text"}
-{"index":{"_id":"8"}}
 {"Body":"test wildcard __ beside each other"}
-{"index":{"_id":"9"}}
 {"Body":"test backslash wildcard \\_"}
-{"index":{"_id":"10"}}
 {"Body":"tEsT wIlDcArD sensitive cases"}