remove trailing whitespace

Author: herin049

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

@@ -500,7 +500,7 @@ def channel_credential_provider() -> grpc.ChannelCredentials:
 """
 .. envvar:: OTEL_PYTHON_EXPORTER_OTLP_GRPC_RETRYABLE_ERROR_CODES
 
-The :envvar:`OTEL_PYTHON_EXPORTER_OTLP_GRPC_RETRYABLE_ERROR_CODES` stores a comma-separated list of human-readable 
+The :envvar:`OTEL_PYTHON_EXPORTER_OTLP_GRPC_RETRYABLE_ERROR_CODES` stores a comma-separated list of human-readable
 gRPC error codes that are considered retryable for the OTLP gRPC exporters (e.g. `UNAVAILABLE, DEADLINE_EXCEEDED`).
 Supported error codes are defined in `grpc.StatusCode` and are parsed in a case-insensitive manner.