Update SimpleXmlRpcServer.ql to avoid av detection

This file was being flagged by McAfee as an `Exploit-Generic.src`
trojan. We have attempted to report this to Mcafee without success so
far. This commit therefore adjusts the file to avoid detection.

Author: lcartey

python/ql/src/experimental/Security/CWE-611/SimpleXmlRpcServer.ql

@@ -1,6 +1,6 @@
 /**
- * @name SimpleXMLRPCServer DoS vulnerability
- * @description SimpleXMLRPCServer is vulnerable to DoS attacks from untrusted user input
+ * @name SimpleXMLRPCServer denial of service
+ * @description SimpleXMLRPCServer is vulnerable to denial of service attacks from untrusted user input
  * @kind problem
  * @problem.severity warning
  * @precision high