collector: update internal logs config to include OTLP export

This adds the details to emit the Collector's internal logs via OTLP.

Fixes open-telemetry#5680

Signed-off-by: Alex Boten <[email protected]>

content/en/docs/collector/internal-telemetry.md

@@ -104,6 +104,21 @@ journalctl | grep otelcol | grep Error
 
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+The following configuration can be used to emit internal logs from the
+Collector to an OTLP/gRPC backend:
+
+```yaml
+service:
+  telemetry:
+    logs:
+      processors:
+        - batch:
+            exporter:
+              otlp:
+                protocol: grpc/protobuf
+                endpoint: https://backend:4317
+```
+
 ### Configure internal traces
 
 The Collector does not expose traces by default, but it can be configured to.
@@ -141,7 +156,7 @@ Note that the `tracer_provider` section there corresponds to `traces` here.
 The Collector can be configured to push its own telemetry to an
 [OTLP receiver](https://github.com/open-telemetry/opentelemetry-collector/tree/main/receiver/otlpreceiver)
 and send the data through configured pipelines. In the following example, the
-Collector is configured to push metrics and traces every 10s using OTLP gRPC to
+Collector is configured to push metrics, traces, and logs every 10s using OTLP gRPC to
 `localhost:14317`:
 
 ```yaml
@@ -176,6 +191,13 @@ service:
               otlp:
                 protocol: grpc/protobuf
                 endpoint: http://localhost:14317
+    logs:
+      processors:
+        - batch:
+            exporter:
+              otlp:
+                protocol: grpc/protobuf
+                endpoint: http://localhost:14317
 ```
 
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