Fix Spring LDAP link

index.html

@@ -74,7 +74,7 @@ be extended to meet custom requirements
 
 ### Related Projects
 
-* [Spring LDAP](http://grails.org/plugin/spring-ldap)
+* [Spring LDAP]({{site.projects_site_url}}/spring-ldap)
 * [Spring Security OAuth]({{site.projects_site_url}}/spring-security-oauth)
 * [Spring Security Grails](http://grails.org/plugin/spring-security-core)
 * [Spring Security GraiSecurity SAML]({{site.projects_site_url}}/spring-security-saml)