Fix span kind for RPC client side

Cargo.lock

@@ -433,7 +433,7 @@ dependencies = [
 
 [[package]]
 name = "netapp"
-version = "0.4.0"
+version = "0.4.1"
 dependencies = [
  "arc-swap",
  "async-trait",

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "netapp"
-version = "0.4.1"
+version = "0.4.2"
 authors = ["Alex Auvolat <alex@adnab.me>"]
 edition = "2018"
 license-file = "LICENSE"

src/client.rs

@@ -156,7 +156,7 @@ impl ClientConn {
 			if #[cfg(feature = "telemetry")] {
 				let tracer = opentelemetry::global::tracer("netapp");
 				let mut span = tracer.span_builder(format!("RPC >> {}", path))
-					.with_kind(SpanKind::Server)
+					.with_kind(SpanKind::Client)
 					.start(&tracer);
 				let propagator = BinaryPropagator::new();
 				let telemetry_id = Some(propagator.to_bytes(span.span_context()).to_vec());