DOCS-10989 Update driver support links for Kerberos

Author: kallimachos

source/core/kerberos.txt

@@ -193,15 +193,16 @@ Driver Support
 
 The following MongoDB drivers support Kerberos authentication:
 
-- :api:`C <c/current/authentication.html#kerberos>`
-- `C++ <https://mongodb.github.io/mongo-cxx-driver?jmp=docs>`_
+- :api:`C <c/current/authentication.html#authentication-kerberos>`
+- `C++ <https://mongodb.github.io/mongo-cxx-driver/mongocxx-v3/configuration/>`_
 - :ecosystem:`Java </tutorial/authenticate-with-java-driver/>`
 - `C# <http://mongodb.github.io/mongo-csharp-driver/2.0/reference/driver/authentication/#gssapi-kerberos>`_
 - `Node.js <http://mongodb.github.io/node-mongodb-native/2.0/tutorials/enterprise_features/>`_
-- `Perl <https://metacpan.org/pod/MongoDB::MongoClient#GSSAPI-for-Kerberos>`_
-- `PHP <http://php.net/manual/en/mongoclient.construct.php>`_
+- `Perl <https://metacpan.org/pod/MongoDB::MongoClient#GSSAPI-(for-Kerberos)>`_
+- `PHP <http://php.net/manual/en/mongodb-driver-manager.construct.php>`_
 - `Python <http://api.mongodb.org/python/current/examples/authentication.html>`_
-- :ecosystem:`Ruby </tutorial/ruby-driver-tutorial/#gssapi-kerberos-mechanism>`
+- `Ruby <https://docs.mongodb.com/ruby-driver/master/tutorials/ruby-driver-admin-tasks/#kerberos-gssapi-mechanism>`_
+- `Scala <http://mongodb.github.io/mongo-scala-driver/2.1/reference/connecting/authenticating/>`_
 
 Use with Additional MongoDB Authentication Mechanism
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~