Java: remove unnecessary anchor and update page name

Author: Jami Cogswell

java/ql/src/Security/CWE/CWE-352/SpringCSRFProtection.qhelp

@@ -30,8 +30,8 @@ OWASP:
 </li>
 <li>
 Spring Security Reference:
-<a href="https://docs.spring.io/spring-security/reference/servlet/exploits/csrf.html#servlet-csrf">
-  Cross Site Request Forgery (CSRF) for Servlet Environments
+<a href="https://docs.spring.io/spring-security/reference/servlet/exploits/csrf.html">
+  Cross Site Request Forgery (CSRF)
 </a>.
 </li>
 </references>