DOCS-3483: additional emphasis

Sam Kleinman · Sam Kleinman · commit a071d3100164 · 2014-09-23T13:30:27.000-04:00
diff --git a/source/reference/configuration-options.txt b/source/reference/configuration-options.txt
@@ -4,11 +4,13 @@ Configuration File Options
 
 .. default-domain:: mongodb
 
-.. versionchanged:: 2.6
-   MongoDB introduces a YAML-based configuration file format.
-   The :v2.4:`2.4 configuration file format
-   </reference/configuration-options>` remains for backward
-   compatibility.
+.. important:: 
+
+   .. versionchanged:: 2.6
+      MongoDB introduces a YAML-based configuration file format.
+      The :v2.4:`2.4 configuration file format
+      </reference/configuration-options>` remains for backward
+      compatibility.
 
 Overview
 --------
