fix test

csv-core/src/test/scala/org/bitlap/csv/core/test/StringUtilsTest.scala

@@ -42,6 +42,6 @@ class StringUtilsTest extends AnyFlatSpec with Matchers {
     val line = """abc,"{""a"":""b"",""c"":""d""}",d,12,2,false,0.1,0.23333"""
     val csv = StringUtils.extraJsonValues[Dimension3](line)((k, v) => Dimension3(k, v))
     println(csv)
-    assert(csv.toString() == "List(Dimension3(a,b), Dimension3(c,d))")
+    assert(csv.toString() == "List(Dimension3(\"a\",\"b\"), Dimension3(\"c\",\"d\"))")
   }
 }