Fixed file reference in test cases

Author: Timo Mueller

java/ql/test/experimental/query-tests/security/CWE-665/InsecureRmiJmxEnvironmentConfiguration.java

@@ -6,7 +6,7 @@
 import java.util.HashMap;
 import java.util.Map;
 
-public class InsecureRmiServerInitialisation {
+public class InsecureRmiJmxEnvironmentConfiguration {
 
   public void initInsecureJmxDueToNullEnv() throws IOException {
     // Bad initializing env (arg1) with null