java, loadtesting, Update tspconfig.yaml (#36583)

Author: weidongxu-microsoft

specification/loadtestservice/LoadTestService/tspconfig.yaml

@@ -61,5 +61,5 @@ options:
     partial-update: true
     generate-tests: false
     generate-samples: false
-    service-name: Load Test
+    service-name: Load Testing
     flavor: azure