url fixes

to more recent Ambari docs and to reflect missing MS one

README.md

@@ -318,14 +318,14 @@ We will run through a series of labs and step by step, achieve all of the above
   - HadoopNodes OU: list of nodes registered with AD
   ![Image](https://raw.githubusercontent.com/HortonworksUniversity/Security_Labs/master/screenshots/AD-hadoopnodes.png)
 
-- In addition, the below steps would have been completed in advance [per doc](http://docs.hortonworks.com/HDPDocuments/Ambari-2.2.0.0/bk_Ambari_Security_Guide/content/_use_an_existing_active_directory_domain.html):
+- In addition, the below steps would have been completed in advance [per doc](http://docs.hortonworks.com/HDPDocuments/Ambari-2.2.2.0/bk_Ambari_Security_Guide/content/_use_an_existing_active_directory_domain.html):
   - Ambari Server and cluster hosts have network access to, and be able to resolve the DNS names of, the Domain Controllers.
   - Active Directory secure LDAP (LDAPS) connectivity has been configured.
   - Active Directory User container for principals has been created and is on-hand. For example, "ou=HadoopServices,dc=lab,dc=hortonworks,dc=net"
   - Active Directory administrative credentials with delegated control of "Create, delete, and manage user accounts" on the previously mentioned User container are on-hand. e.g. hadoopadmin
 
 
-- For general info on Active Directory refer to Microsoft website [here](https://technet.microsoft.com/en-us/library/cc780336(v=ws.10).aspx) 
+- For general info on Active Directory refer to Microsoft website [here](https://technet.microsoft.com/en-us/library/hh831484(v=ws.11).aspx) 
 
 
 ### Configure name resolution & certificate to Active Directory