Fix microservice level benchmark issue (#86)

* Fix microservice level benchmark issue

Signed-off-by: lvliang-intel <[email protected]>

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

---------

Signed-off-by: lvliang-intel <[email protected]>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: lvliang-intel

evals/benchmark/benchmark.py

@@ -87,9 +87,10 @@ def create_and_save_run_yaml(example, deployment_type, service_type, service_nam
     for user_queries in test_suite_config["user_queries"]:
         concurrency = max(1, user_queries // test_suite_config["concurrent_level"])
 
-        bench_target = (
-            f"{example}{'bench' if service_type == 'e2e' and test_suite_config['random_prompt'] else 'fixed'}"
-        )
+        if service_type == "e2e":
+            bench_target = f"{example}{'bench' if test_suite_config['random_prompt'] else 'fixed'}"
+        else:
+            bench_target = f"{service_type}{'bench' if test_suite_config['random_prompt'] else 'fixed'}"
         run_yaml_content = create_run_yaml_content(
             service_name, base_url, bench_target, concurrency, user_queries, test_suite_config
         )