Fix tests

spec/models/form/lettings/pages/person_age_spec.rb

@@ -12,11 +12,11 @@ RSpec.describe Form::Lettings::Pages::PersonAge, type: :model do
   end
 
   it "has the correct header" do
-    expect(page.header).to eq("")
+    expect(page.header).to be nil
   end
 
   it "has the correct description" do
-    expect(page.description).to eq("")
+    expect(page.description).to be nil
   end
 
   context "with person 2" do

spec/models/form/lettings/pages/person_gender_identity_spec.rb

@@ -12,11 +12,11 @@ RSpec.describe Form::Lettings::Pages::PersonGenderIdentity, type: :model do
   end
 
   it "has the correct header" do
-    expect(page.header).to eq("")
+    expect(page.header).to be nil
   end
 
   it "has the correct description" do
-    expect(page.description).to eq("")
+    expect(page.description).to be nil
   end
 
   context "with person 2" do

spec/models/form/lettings/pages/person_known_spec.rb

@@ -16,7 +16,7 @@ RSpec.describe Form::Lettings::Pages::PersonKnown, type: :model do
   end
 
   it "has the correct description" do
-    expect(page.description).to eq("")
+    expect(page.description).to be nil
   end
 
   context "with person 2" do

spec/models/form/lettings/pages/person_relationship_to_lead_spec.rb

@@ -12,11 +12,11 @@ RSpec.describe Form::Lettings::Pages::PersonRelationshipToLead, type: :model do
   end
 
   it "has the correct header" do
-    expect(page.header).to eq("")
+    expect(page.header).to be nil
   end
 
   it "has the correct description" do
-    expect(page.description).to eq("")
+    expect(page.description).to be nil
   end
 
   context "with person 2" do

spec/models/form/lettings/pages/person_working_situation_spec.rb

@@ -12,11 +12,11 @@ RSpec.describe Form::Lettings::Pages::PersonWorkingSituation, type: :model do
   end
 
   it "has the correct header" do
-    expect(page.header).to eq("")
+    expect(page.header).to be nil
   end
 
   it "has the correct description" do
-    expect(page.description).to eq("")
+    expect(page.description).to be nil
   end
 
   context "with person 2" do