Adjust test method name

Author: msoltysik

opentelemetry-sdk/tests/metrics/integration_test/test_provider_shutdown.py

@@ -57,7 +57,7 @@ def force_flush(self, timeout_millis: float = 10_000) -> bool:
 
 
 class TestMeterProviderShutdown(TestCase):
-    def test_meter_provider_shutdown_triggers_garbage_collection(self):
+    def test_meter_provider_shutdown_cleans_up_successfully(self):
         def create_and_shutdown():
             exporter = FakeMetricsExporter()
             exporter_wr = weakref.ref(exporter)