fixed lint issue

benchmarks/benchmark/tools/profile-generator/sample.tfvars

@@ -30,7 +30,7 @@ k8s_hf_secret                              = "hf-token"
 
 # Benchmark configuration for Locust Docker accessing inference server
 request_rates = [5, 10, 15, 20]
-artifact_registry="your_project_artifact_registry"
+artifact_registry = "your_project_artifact_registry"
 
 # Model server configuration information
 targets = {