Pluralise other buyers, update privacy notice test

app/models/form/sales/questions/housing_benefits.rb

@@ -2,7 +2,7 @@ class Form::Sales::Questions::HousingBenefits < ::Form::Question
   def initialize(id, hsh, page, joint_purchase:)
     super(id, hsh, page)
     @id = "hb"
-    @check_answer_label = "Housing-related benefits buyer received before buying this property"
+    @check_answer_label = "Housing-related benefits #{joint_purchase ? 'buyers' : 'buyer'} received before buying this property"
     @header = "#{joint_purchase ? 'Were the buyers' : 'Was the buyer'} receiving any of these housing-related benefits immediately before buying this property?"
     @type = "radio"
     @answer_options = ANSWER_OPTIONS

app/models/form/sales/questions/number_joint_buyers.rb

@@ -19,7 +19,7 @@ class Form::Sales::Questions::NumberJointBuyers < ::Form::Question
     if form.start_year_after_2024?
       nil
     else
-      "You should still try to answer all questions even if the buyer wasn't interviewed in person"
+      "You should still try to answer all questions even if the buyers weren't interviewed in person"
     end
   end
 end

spec/models/form/sales/questions/number_joint_buyers_spec.rb

@@ -38,7 +38,7 @@ RSpec.describe Form::Sales::Questions::NumberJointBuyers, type: :model do
   end
 
   it "has the correct hint_text" do
-    expect(question.hint_text).to eq("You should still try to answer all questions even if the buyer wasn't interviewed in person")
+    expect(question.hint_text).to eq("You should still try to answer all questions even if the buyers weren't interviewed in person")
   end
 
   it "has the correct answer_options" do

spec/models/form/sales/questions/privacy_notice_spec.rb

@@ -1,7 +1,7 @@
 require "rails_helper"
 
 RSpec.describe Form::Sales::Questions::PrivacyNotice, type: :model do
-  subject(:question) { described_class.new(question_id, question_definition, page) }
+  subject(:question) { described_class.new(question_id, question_definition, page, joint_purchase: false) }
 
   let(:question_id) { nil }
   let(:question_definition) { nil }