Replaced node with site to align with our defined terms

doc/administration/geo/setup/index.md

@@ -9,24 +9,24 @@ type: howto
 
 These instructions assume you have a working instance of GitLab. They guide you through:
 
-1. Making your existing instance the **primary** node.
-1. Adding **secondary** nodes.
+1. Making your existing instance the **primary** site.
+1. Adding **secondary** site(s).
 
 WARNING:
-The steps below should be followed in the order they appear. **Make sure the GitLab version is the same on all nodes.**
+The steps below should be followed in the order they appear. **Make sure the GitLab version is the same on all sites.**
 
 ## Using Omnibus GitLab
 
 If you installed GitLab using the Omnibus packages (highly recommended):
 
-1. [Install GitLab Enterprise Edition](https://about.gitlab.com/install/) on the server that will serve as the **secondary** node. Do not create an account or log in to the new **secondary** node.
-1. [Upload the GitLab License](../../../user/admin_area/license.md) on the **primary** node to unlock Geo. The license must be for [GitLab Premium](https://about.gitlab.com/pricing/) or higher.
+1. [Install GitLab Enterprise Edition](https://about.gitlab.com/install/) on the node(s) that will serve as the **secondary** site. Do not create an account or log in to the new **secondary** site.
+1. [Upload the GitLab License](../../../user/admin_area/license.md) on the **primary** site to unlock Geo. The license must be for [GitLab Premium](https://about.gitlab.com/pricing/) or higher.
 1. [Set up the database replication](database.md) (`primary (read-write) <-> secondary (read-only)` topology).
-1. [Configure fast lookup of authorized SSH keys in the database](../../operations/fast_ssh_key_lookup.md). This step is required and needs to be done on **both** the **primary** and **secondary** nodes.
-1. [Configure GitLab](../replication/configuration.md) to set the **primary** and **secondary** nodes.
-1. Optional: [Configure a secondary LDAP server](../../auth/ldap/index.md) for the **secondary** node. See [notes on LDAP](../index.md#ldap).
+1. [Configure fast lookup of authorized SSH keys in the database](../../operations/fast_ssh_key_lookup.md). This step is required and needs to be done on **both** the **primary** and **secondary** site(s).
+1. [Configure GitLab](../replication/configuration.md) to set the **primary** and **secondary** site(s).
+1. Optional: [Configure a secondary LDAP server](../../auth/ldap/index.md) for the **secondary** site(s). See [notes on LDAP](../index.md#ldap).
 1. Follow the [Using a Geo Site](../replication/usage.md) guide.
 
 ## Post-installation documentation
 
-After installing GitLab on the **secondary** nodes and performing the initial configuration, see the [following documentation for post-installation information](../index.md#post-installation-documentation).
+After installing GitLab on the **secondary** site(s) and performing the initial configuration, see the [following documentation for post-installation information](../index.md#post-installation-documentation).