Updated existing tests following char substitution removal

ee/spec/features/projects/feature_flags/user_creates_feature_flag_spec.rb

@@ -38,7 +38,7 @@ describe 'User creates feature flag', :js do
     it 'records audit event' do
       visit(project_audit_events_path(project))
 
-      expect(page).to have_text("Created feature flag ci live trace with description \"For live trace\".")
+      expect(page).to have_text("Created feature flag ci_live_trace with description \"For live trace\".")
     end
   end
 

ee/spec/features/projects/feature_flags/user_deletes_feature_flag_spec.rb

@@ -33,6 +33,6 @@ describe 'User deletes feature flag', :js do
   it 'records audit event' do
     visit(project_audit_events_path(project))
 
-    expect(page).to have_text("Deleted feature flag ci live trace.")
+    expect(page).to have_text("Deleted feature flag ci_live_trace.")
   end
 end

ee/spec/features/projects/feature_flags/user_updates_feature_flag_spec.rb

@@ -65,7 +65,7 @@ describe 'User updates feature flag', :js do
       visit(project_audit_events_path(project))
 
       expect(page).to(
-        have_text("Updated feature flag ci live trace. Updated rule review/* active state from true to false.")
+        have_text("Updated feature flag ci_live_trace. Updated rule review/* active state from true to false.")
       )
     end
   end
@@ -96,7 +96,7 @@ describe 'User updates feature flag', :js do
       visit(project_audit_events_path(project))
 
       expect(page).to(
-        have_text("Updated feature flag ci live trace")
+        have_text("Updated feature flag ci_live_trace")
       )
     end
   end
@@ -124,7 +124,7 @@ describe 'User updates feature flag', :js do
       visit(project_audit_events_path(project))
 
       expect(page).to(
-        have_text("Updated feature flag ci live trace")
+        have_text("Updated feature flag ci_live_trace")
       )
     end
   end

ee/spec/services/feature_flags/create_service_spec.rb

@@ -47,7 +47,7 @@ describe FeatureFlags::CreateService do
       end
 
       it 'creates audit event' do
-        expected_message = "Created feature flag <strong>feature flag</strong> "\
+        expected_message = "Created feature flag <strong>feature_flag</strong> "\
                            "with description <strong>\"description\"</strong>. "\
                            "Created rule <strong>*</strong> and set it as <strong>active</strong>. "\
                            "Created rule <strong>production</strong> and set it as <strong>inactive</strong>."