Fix logging level docs

This commit fixes an issue with the logging level docs reported as
unconverted snippets.

docs/reference/setup/logging-config.asciidoc

@@ -129,6 +129,7 @@ PUT /_cluster/settings
   }
 }
 -------------------------------
+// CONSOLE
 
 For example:
 
@@ -141,6 +142,7 @@ PUT /_cluster/settings
   }
 }
 -------------------------------
+// CONSOLE
 
 This is most appropriate when you need to dynamically need to adjust a logging
 level on an actively-running cluster.