Fix incorrect use of Doxia markup

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient/branches/4.0.x@998640 13f79535-47bb-0310-9956-ffa450edef68

src/site/apt/logging.apt

@@ -69,13 +69,13 @@ Logging Practices
 * {Wire Logging}
 
     The wire log is used to log all data transmitted to and from servers when executing HTTP 
-    requests. The wire log uses the {{{org.apache.http.wire}}} logging category. This log should 
+    requests. The wire log uses the <<<org.apache.http.wire>>> logging category. This log should 
     only be enabled to debug problems, as it will produce an extremely large amount of log data.
 
 * {HTTP header Logging}
 
     Because the content of HTTP requests is usually less important for debugging than the HTTP 
-    headers, the {{{org.apache.http.headers}}} logging category for capturing HTTP headers only.
+    headers, the <<<org.apache.http.headers>>> logging category for capturing HTTP headers only.
 
 * {Configuration Examples}