Fix TestNxqlConversion.testConverterILIKE on Windows

expected:<{[
  "match" : {
    "f1.lowercase" : {
      "query" : "foo",
      "type" : "phrase_prefix"
    }
  }]
}> but was:<{[
  "match" : {
    "f1.lowercase" : {
      "query" : "foo",
      "type" : "phrase_prefix"
    }
  }
]
}>
	at org.junit.Assert.assertEquals(Assert.java:115)
	at org.junit.Assert.assertEquals(Assert.java:144)
	at org.nuxeo.elasticsearch.test.nxql.TestNxqlConversion.testConverterILIKE(TestNxqlConversion.java:231)