Add max range to mortgage length (#1245)

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

@@ -6,6 +6,7 @@ class Form::Sales::Questions::MortgageLength < ::Form::Question
     @header = "What is the length of the mortgage?"
     @type = "numeric"
     @min = 0
+    @max = 60
     @width = 5
     @suffix = " years"
     @hint_text = "You should round up to the nearest year. Value should not exceed 60 years."

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

@@ -48,4 +48,8 @@ RSpec.describe Form::Sales::Questions::MortgageLength, type: :model do
   it "has correct min" do
     expect(question.min).to eq(0)
   end
+
+  it "has correct max" do
+    expect(question.max).to eq(60)
+  end
 end