[EXAMPLES] Use logs API instead of logs bridge API in the example (#2494)

Author: ThomsonTan

examples/common/logs_foo_library/foo_library.cc

@@ -32,7 +32,6 @@ void foo_library()
   auto scoped_span = trace::Scope(get_tracer()->StartSpan("foo_library"));
   auto ctx         = span->GetContext();
   auto logger      = get_logger();
-  logger->EmitLogRecord(opentelemetry::logs::Severity::kDebug, "body", ctx.trace_id(),
-                        ctx.span_id(), ctx.trace_flags(),
-                        opentelemetry::common::SystemTimestamp(std::chrono::system_clock::now()));
+
+  logger->Debug("body", ctx.trace_id(), ctx.span_id(), ctx.trace_flags());
 }

examples/logs_simple/README.md

@@ -1,16 +1,16 @@
-
 # Simple Logs Example
 
 In this example, the application in `main.cc` initializes an
 `OStreamLogRecordExporter` instance and registers a logger
 provider, as well as initializes a `StdoutSpanExporter` instance and registers a
-tracer provider from the [OpenTelemetry
+tracer provider from the [OpenTelemetry C++
 SDK](https://github.com/open-telemetry/opentelemetry-cpp).
 
-The application then calls a `logs_foo_library` which has been instrumented
-using the [OpenTelemetry
-API](https://github.com/open-telemetry/opentelemetry-cpp/tree/main/api).
-Resulting logs and traces are directed to stdout.
+The application then calls into
+[`logs_foo_library`](https://github.com/open-telemetry/opentelemetry-cpp/blob/main/examples/common/logs_foo_library/foo_library.cc)
+which has been instrumented using the [OpenTelemetry Logs
+API](../../api/include/opentelemetry/logs/logger.h). Resulting logs and traces
+are directed to stdout.
 
 See [CONTRIBUTING.md](../../CONTRIBUTING.md) for instructions on building and
 running the example.