docs(system-requirements): Fix broken links

Author: jgmize

docs/installing_deis/aws.rst

@@ -65,7 +65,7 @@ By default, the script will provision 3 servers. You can override this by settin
     $ export DEIS_NUM_INSTANCES=5
 
 Note that for scheduling to work properly, clusters must consist of at least 3 nodes and always
-have an odd number of members. For more information, see `optimal etcd cluster size`_.
+have an odd number of members. For more information, see `etcd disaster recovery`_.
 
 Deis clusters of less than 3 nodes are unsupported.
 
@@ -178,5 +178,5 @@ start installing the platform.
 .. _`contrib/ec2`: https://github.com/deis/deis/tree/master/contrib/ec2
 .. _`cloudformation.json`: https://github.com/deis/deis/blob/master/contrib/ec2/cloudformation.json
 .. _`etcd`: https://github.com/coreos/etcd
-.. _`optimal etcd cluster size`: https://github.com/coreos/etcd/blob/master/Documentation/optimal-cluster-size.md
+.. _`etcd disaster recovery`: https://github.com/coreos/etcd/blob/master/Documentation/admin_guide.md#disaster-recovery
 .. _`PyYAML`: http://pyyaml.org/

docs/installing_deis/rackspace.rst

@@ -74,7 +74,7 @@ By default, the provision script will provision 3 servers. You can override this
     $ DEIS_NUM_INSTANCES=5 ./provision-rackspace-cluster.sh deis-key
 
 Note that for scheduling to work properly, clusters must consist of at least 3 nodes and always have an odd number of members.
-For more information, see `optimal etcd cluster size`_.
+For more information, see `etcd disaster recovery`_.
 
 Deis clusters of less than 3 nodes are unsupported.
 
@@ -131,6 +131,6 @@ start installing the platform.
 
 .. _`contrib/rackspace`: https://github.com/deis/deis/tree/master/contrib/rackspace
 .. _`CoreOS on Rackspace`: https://coreos.com/docs/running-coreos/cloud-providers/rackspace/
-.. _`optimal etcd cluster size`: https://github.com/coreos/etcd/blob/master/Documentation/optimal-cluster-size.md
+.. _`etcd disaster recovery`: https://github.com/coreos/etcd/blob/master/Documentation/admin_guide.md#disaster-recovery
 .. _Rackspace: https://github.com/deis/deis/tree/master/contrib/rackspace#readme
 .. _`contrib/rackspace`: https://github.com/deis/deis/tree/master/contrib/rackspace

docs/installing_deis/system-requirements.rst

@@ -33,7 +33,7 @@ Cluster size
 
 For scheduling to work properly, clusters must consist of at least three nodes and always
 have an odd number of members. This is mostly because the underlying CoreOS cluster must always
-be able to obtain a quorum (see `optimal etcd cluster size`_). Additionally, the :ref:`Store`
+be able to obtain a quorum (see `etcd disaster recovery`_). Additionally, the :ref:`Store`
 component keeps three replicas of stored data, so it requires at least three nodes.
 
 .. important::
@@ -50,5 +50,5 @@ Network
 .. include:: ../_includes/_private-network.rst
 
 .. _`dokku`: https://github.com/progrium/dokku
-.. _`optimal etcd cluster size`: https://github.com/coreos/etcd/blob/master/Documentation/optimal-cluster-size.md
+.. _`etcd disaster recovery`: https://github.com/coreos/etcd/blob/master/Documentation/admin_guide.md#disaster-recovery
 .. _`sponsored`: http://deis.io/deis-sponsors-dokku/