Note feature level in spec

[skip-ci]

ee/spec/lib/gitlab/gl_repository/identifier_spec.rb

@@ -5,6 +5,7 @@ require 'spec_helper'
 describe Gitlab::GlRepository::Identifier do
   let_it_be(:group) { create(:group) }
 
+  # GitLab Starter feature
   context 'group wiki' do
     it_behaves_like 'parsing gl_repository identifier' do
       let(:record_id) { group.id }

ee/spec/lib/gitlab/gl_repository_spec.rb

@@ -6,6 +6,7 @@ describe ::Gitlab::GlRepository do
   describe '.parse' do
     let_it_be(:group) { create(:group) }
 
+    # Group Wiki is a GitLab Starter feature
     it 'parses a group wiki gl_repository' do
       expect(described_class.parse("group-#{group.id}-wiki")).to eq([group, nil, Gitlab::GlRepository::WIKI])
     end