DM-4205: Add hotline and link to MyHealtheVet to contact form (#711)

* Update contact from copy

* Add alert box with hotline and linke to MyHealtheVet

* Adjust columns

* Rename references to "Contact us"

---------

Co-authored-by: Camille Villa <[email protected]>

app/views/about/index.html.erb

@@ -116,12 +116,20 @@
     </div>
   </section>
 
-  <section class="about-us-contact-section grid-row" role="region" aria-label="Contact us">
+  <section class="about-us-contact-section grid-row" role="region" aria-label="Send us feedback">
+    <div class="grid-col-12 margin-bottom-3">
+      <h2 class="usa-prose-h2 margin-bottom-3 margin-top-0">Send us your feedback</h2>
+      <div class="usa-alert usa-alert--info">
+        <div class="usa-alert__body">
+          <p class="usa-alert__text">
+            For questions related to VA medical care, benefits, or services, call <a href="tel:+18006982411" aria-label="1-800-MyVA411" class="usa-link">1-800-MyVA411</a> (<a href="tel:+18006982411" class="usa-link">1-800-698-2411</a>) or log into <a href="https://www.myhealth.va.gov/mhv-portal-web/home" class="usa-link">MyHealtheVet</a>.
+          </p>
+        </div>
+      </div>
+    </div>
     <div class="grid-col-12 desktop:grid-col-8">
-      <h2 class="usa-prose-h2 margin-bottom-4 margin-top-0">Contact us</h2>
       <p class="usa-prose-body">
-        Have a question for our team? Send an email to <a href="mailto:[email protected]?subject=(About) Diffusion Marketplace Inquiry" class="usa-link">[email protected]</a>
-        and we’ll get back to you as soon as we can. Or, you can send us a message using the form below.
+        Have feedback or questions for the Diffusion Marketplace team? Send a message to <a href="mailto:[email protected]?subject=(About) Diffusion Marketplace Inquiry" class="usa-link">[email protected]</a> and we’ll get back to you as soon as we can.
       </p>
       <%= render partial: 'shared/email_form', locals: { path: about_path, additional_label_text: nil } %>
     </div>

spec/features/about_spec.rb

@@ -41,7 +41,7 @@
     end
   end
 
-  describe 'Contact us section' do
+  describe 'Send us feedback section' do
     it 'should allow the user to send an email to the marketplace team' do
       fill_in('Your email', with: '[email protected]')
       # all fields should be required