Apply suggestions from code review

Co-authored-by: Mauricio Vásquez <mauricio@kinvolk.io>

Author: alrex

opentelemetry-sdk/src/opentelemetry/sdk/metrics/export/in_memory_metrics_exporter.py

@@ -19,7 +19,8 @@
 
 
 class InMemoryMetricsExporter(MetricsExporter):
-    """ Implementation of `MetricsExporter` thta stores metrics in memory.
+    """Implementation of `MetricsExporter` that stores metrics in memory.
+
     This class can be used for testing purposes. It stores exported metrics
     in a list in memory that can be retrieved using the
     :func:`.get_exported_metrics` method.

tests/util/src/opentelemetry/test/test_base.py

@@ -74,7 +74,8 @@ def create_tracer_provider(**kwargs):
 
     @staticmethod
     def create_meter_provider(**kwargs):
-        """Helper to create a configure meter provider
+        """Helper to create a configured meter provider
+
         Creates a `MeterProvider` and an `InMemoryMetricsExporter`.
 
         Returns: