Cleanup YAML file (open-telemetry#3440)

Author: malaterre

docs/examples/logs/README.rst

@@ -12,15 +12,15 @@ Start the Collector locally to see data being exported. Write the following file
 
     # otel-collector-config.yaml
     receivers:
-    otlp:
+      otlp:
         protocols:
-        grpc:
-
-    exporters:
-    logging:
+          grpc:
 
     processors:
-    batch:
+      batch:
+
+    exporters:
+      logging:
 
     service:
         pipelines:
@@ -78,4 +78,4 @@ The resulting logs will appear in the output from the collector and look similar
         Body: Hyderabad, we have a major problem.
         Trace ID: 63491217958f126f727622e41d4460f3
         Span ID: d90c57d6e1ca4f6c
-        Flags: 1
+        Flags: 1