fix newline

Author: lalitb

opentelemetry-otlp/tests/integration_test/Cargo.toml

@@ -26,4 +26,4 @@ reqwest-blocking-client = ["opentelemetry-otlp/reqwest-blocking-client", "opente
 tonic-client = ["opentelemetry-otlp/grpc-tonic", "opentelemetry-otlp/trace", "opentelemetry-otlp/logs", "opentelemetry-otlp/metrics"]
 
 # Keep tonic as the default client
-default = ["tonic-client"]
+default = ["tonic-client"]