Update secondary node pages

ee/app/views/admin/geo/shared/_replication_nav.haml

@@ -4,7 +4,7 @@
   %h2.page-title
     = _('Geo Replication')
   %p
-    = s_('Geo|Review replication status, and resynchronize and reverify items with the primary node.')
+    = s_('Geo|Review replication status, and resynchronize and reverify items with the primary site.')
 %ul.nav-links.nav.nav-tabs.border-top.border-bottom.border-secondary-100
   = nav_link(path: 'admin/geo/projects#index', html_options: { class: 'gl-pr-2' }) do
     = link_to admin_geo_projects_path, title: _('Projects') do

ee/spec/features/geo_node_spec.rb

@@ -22,13 +22,13 @@ RSpec.describe 'GEO Nodes', :geo do
     describe "showing Flash Info Message" do
       it 'on dashboard' do
         visit root_dashboard_path
-        expect(page).to have_content 'You are on a secondary, read-only Geo node. If you want to make changes, you must visit the primary site.'
+        expect(page).to have_content 'You are on a secondary, read-only Geo site. If you want to make changes, you must visit the primary site.'
         expect(page).to have_content 'Go to the primary site'
       end
 
       it 'on project overview' do
         visit project_path(project)
-        expect(page).to have_content 'You are on a secondary, read-only Geo node. If you want to make changes, you must visit the primary site.'
+        expect(page).to have_content 'You are on a secondary, read-only Geo site. If you want to make changes, you must visit the primary site.'
         expect(page).to have_content 'Go to the primary site'
       end
     end