Fix a test that was hardcoding a documentation URL

Signed-off-by: Rémy Coutable <remy@rymai.me>

ee/spec/lib/gitlab/git_access_spec.rb

@@ -26,7 +26,7 @@ describe Gitlab::GitAccess do
 
     it 'denies push access with primary present' do
       error_message = "You can't push code to a read-only GitLab instance. "\
-"Please use the Primary node URL: https://localhost:3000/gitlab/#{project.full_path}.git. Documentation: https://docs.gitlab.com/ee/gitlab-geo/using_a_geo_server.html"
+"Please use the Primary node URL: https://localhost:3000/gitlab/#{project.full_path}.git. Documentation: #{EE::Gitlab::GeoGitAccess::GEO_SERVER_DOCS_URL}"
 
       primary_node = create(:geo_node, :primary, url: 'https://localhost:3000/gitlab')
       allow(Gitlab::Geo).to receive(:primary).and_return(primary_node)

ee/spec/lib/gitlab/git_access_wiki_spec.rb

@@ -30,7 +30,7 @@ describe Gitlab::GitAccessWiki do
 
     it 'denies push access with primary present' do
       error_message = "You can't push code to a read-only GitLab instance. Please use the Primary node URL: "\
-"https://localhost:3000/gitlab/#{project.full_path}.wiki.git. Documentation: https://docs.gitlab.com/ee/gitlab-geo/using_a_geo_server.html"
+"https://localhost:3000/gitlab/#{project.full_path}.wiki.git. Documentation: #{EE::Gitlab::GeoGitAccess::GEO_SERVER_DOCS_URL}"
 
       primary_node = create(:geo_node, :primary, url: 'https://localhost:3000/gitlab')
       allow(Gitlab::Geo).to receive(:primary).and_return(primary_node)