Change test method name

Signed-off-by: Gao Binlong <[email protected]>

server/src/test/java/org/opensearch/rest/action/admin/cluster/RestNodesStatsActionTests.java

@@ -130,7 +130,7 @@ public void testUnrecognizedIndexMetricDidYouMean() {
         );
     }
 
-    public void testIndexMetricsRequestWithoutIndicesMetric() throws IOException {
+    public void testIndexMetricsRequestWithoutIndicesAndCachesMetrics() throws IOException {
         final HashMap<String, String> params = new HashMap<>();
         final Set<String> metrics = new HashSet<>(RestNodesStatsAction.METRICS.keySet());
         metrics.remove("indices");