mobile: Fix the debug log message in the network configuration filter (…

…#34093)

Risk Level: low
Testing: n/a
Docs Changes: n/a
Release Notes: n/a
Platform Specific Features: mobile

Signed-off-by: Fredy Wijaya <fredyw@google.com>

mobile/library/common/extensions/filters/http/network_configuration/filter.cc

@@ -73,7 +73,7 @@ void NetworkConfigurationFilter::onProxyResolutionComplete(
 
 Http::FilterHeadersStatus
 NetworkConfigurationFilter::decodeHeaders(Http::RequestHeaderMap& request_headers, bool) {
-  ENVOY_LOG(trace, "NetworkConfigurationFilter::decodeHeaders", request_headers);
+  ENVOY_LOG(trace, "NetworkConfigurationFilter::decodeHeaders: {}", request_headers);
 
   const auto authority = request_headers.getHostValue();
   if (authority.empty()) {