Fix config file to show full tags

docs/using/configure-proxy.textile

@@ -12,13 +12,16 @@ If you are behind a firewall and require the use of an HTTP Proxy, you must conf
 
 2. Add the 'proxy' tag and required information:
 
-bc(prettyprint linenums).. <proxy>
+bc(prettyprint linenums).. <?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<configuration>
+ <proxy>
   <host>proxy-host-name</host>
   <port>proxy-port</port>
   <!-- The entries below are necessary only if your proxy needs authentication -->
   <username>proxy-user-name</username>
   <password>proxy-password</password>
-</proxy>
+ </proxy>
+</configuration>
 
 p. 3. Set up the proxy information in your Maven settings.xml. For detailed instructions, follow the Maven proxy guide "here":http://maven.apache.org/guides/mini/guide-proxies.html.
 
@@ -38,4 +41,4 @@ bc(prettyprint linenums).. <settings>
 
 p. 4. Restart Forge
 
-Once the above steps have been completed, you may use Forge in your corporate environment
+Once the above steps have been completed, you may use Forge in your corporate environment