Fix Rubocop offense in environments policy class

app/policies/environment_policy.rb

 class EnvironmentPolicy < BasePolicy
-
   alias_method :environment, :subject
 
   def rules

spec/models/ci/build_spec.rb

@@ -911,7 +911,7 @@ describe Ci::Build, :models do
       it { is_expected.to eq(environment) }
     end
 
-    context 'when  referenced with a variable' do
+    context 'when referenced with a variable' do
       let(:build) do
         create(:ci_build, pipeline: pipeline, environment: "foo-$CI_COMMIT_REF_NAME")
       end