Fix typo.

Author: billmurrin

README.md

@@ -26,7 +26,7 @@ New Dashboard Features
 *NEW - Version 3 Dashboard Features*
 ![alt text](http://i.imgur.com/viZ3AoK.png "Version 3 Dashboard Features")
 
-New Dashboard Congiguration Feature
+New Dashboard Configuration Feature
 -----------
 - Can now customize the field name used by the widget (Requires dashboard edit permissions)
 
@@ -106,4 +106,4 @@ Steps to build the plugin.
 * Follow the steps above, but **DO NOT** run the `npm start` command. (no need to start the dev web-server) 
 * Run `mvn package` 
 * Copy the generated JAR file located in the target directory to the Graylog plugin directory.
-* Restart Graylog
+* Restart Graylog