3.38.3 location property example includes "message" in the wrong place

[lcartey]

3.38.3 location property has the following example, where the message property is in the wrong place (it is on the threadFlowLocation object rather than the location object).

"locations": [
        ...
        {
          "executionOrder": 2,
          "message": {
            "text": "Attempt to write to the file."
          },
          "location": {
            "physicalLocation": {
              "artifactLocation": {
                "uri": "io/logger.c",
                "uriBaseId": "SRCROOT"
              },
              "region": {
                "startLine": 42,
                "snippet": {
                  "text": "    fprintf(fd, "test\\n");"
                }
              }
            }
          }
        }