fix tests

Signed-off-by: Gregor Zeitlinger <[email protected]>

Author: zeitlinger

prometheus-metrics-instrumentation-dropwizard5/src/test/java/io/prometheus/metrics/instrumentation/dropwizard5/DropwizardExportsTest.java

@@ -350,8 +350,8 @@ private String convertToOpenMetricsFormat(PrometheusRegistry _registry) {
     ByteArrayOutputStream out = new ByteArrayOutputStream();
     OpenMetricsTextFormatWriter writer = new OpenMetricsTextFormatWriter(true, true);
     try {
-      writer.write(out, _registry.scrape(), EscapingScheme.NO_ESCAPING);
-      return out.toString(StandardCharsets.UTF_8.name());
+      writer.write(out, _registry.scrape(), EscapingScheme.UNDERSCORE_ESCAPING);
+      return out.toString(StandardCharsets.UTF_8);
     } catch (IOException e) {
       throw new RuntimeException(e);
     }