Updating Java Customization in Metrics Query client.tsp (#36365)

* Java Updates to client.tsp

* fix metrics typespec

* test update

* Adjusting client.tsp

Author: jairmyree

specification/monitor/Monitor.Query.Metrics/tspconfig.yaml

@@ -45,7 +45,7 @@ options:
     generate-tests: false
     generate-samples: false
     partial-update: true
-    service-name: MetricsQuery
+    service-name: Metrics
     customization-class: "customization/src/main/java/MetricsQueryCustomization.java"
   "@azure-tools/typespec-go":
     service-dir: "sdk/monitor/query"