Merge branch 'add_cred_envvar' of github.com:DylanRussell/opentelemetry-python into add_cred_envvar

Author: DylanRussell

opentelemetry-sdk/src/opentelemetry/sdk/environment_variables/__init__.py

@@ -400,8 +400,8 @@
 """
 .. envvar:: OTEL_PYTHON_EXPORTER_OTLP_LOGS_CREDENTIAL_PROVIDER
 
-The :envvar:`OTEL_PYTHON_EXPORTER_OTLP_LOGS_CREDENTIAL_PROVIDER` provides either ChannelCredentials for grpc OTLP Log exporters,
-or request.Session for HTTP Log exporters.
+The :envvar:`OTEL_PYTHON_EXPORTER_OTLP_LOGS_CREDENTIAL_PROVIDER` provides either `grpc.ChannelCredentials` for grpc OTLP Log exporters,
+or `request.Session` for HTTP Log exporters.
 """
 OTEL_PYTHON_EXPORTER_OTLP_CREDENTIAL_PROVIDER = (
     "OTEL_PYTHON_EXPORTER_OTLP_CREDENTIAL_PROVIDER"