Rename variables in tests

spec/lib/gitlab/usage_data_spec.rb

@@ -942,8 +942,8 @@ RSpec.describe Gitlab::UsageData, :aggregate_failures do
     subject { described_class.analytics_unique_visits_data }
 
     it 'returns the number of unique visits to pages with analytics features' do
-      ::Gitlab::Analytics::UniqueVisits.analytics_events.each do |target_id|
-        expect_any_instance_of(::Gitlab::Analytics::UniqueVisits).to receive(:unique_visits_for).with(targets: target_id).and_return(123)
+      ::Gitlab::Analytics::UniqueVisits.analytics_events.each do |target|
+        expect_any_instance_of(::Gitlab::Analytics::UniqueVisits).to receive(:unique_visits_for).with(targets: target).and_return(123)
       end
 
       expect_any_instance_of(::Gitlab::Analytics::UniqueVisits).to receive(:unique_visits_for).with(targets: :analytics).and_return(543)
@@ -978,8 +978,8 @@ RSpec.describe Gitlab::UsageData, :aggregate_failures do
       described_class.clear_memoization(:unique_visit_service)
 
       allow_next_instance_of(::Gitlab::Analytics::UniqueVisits) do |instance|
-        ::Gitlab::Analytics::UniqueVisits.compliance_events.each do |target_id|
-          allow(instance).to receive(:unique_visits_for).with(targets: target_id).and_return(123)
+        ::Gitlab::Analytics::UniqueVisits.compliance_events.each do |target|
+          allow(instance).to receive(:unique_visits_for).with(targets: target).and_return(123)
         end
 
         allow(instance).to receive(:unique_visits_for).with(targets: :compliance).and_return(543)