Core-1295: replace openstax.secure.force.com with help.openstax.org (#2795)

[CORE-1295]

Author: RoyEJohnson

test/src/data/contact-page.js

@@ -31,6 +31,6 @@ export default {
     mailing_address:
         '<h3 data-block-key="nek5u">OpenStax</h3><p data-block-key="4sbtp">Rice University<br/>6100 Main Street MS-375<br/>Houston, TX 77005</p>',
     customer_service:
-        '<p data-block-key="9iesw"><b>Need help?</b><br/>Visit our <a href="https://openstax.secure.force.com/help">Support Center</a>.<br/></p>',
+        '<p data-block-key="9iesw"><b>Need help?</b><br/>Visit our <a href="https://help.openstax.org">Support Center</a>.<br/></p>',
     promote_image: null
 };

test/src/pages/contact.test.tsx

@@ -43,7 +43,7 @@ const pageData = {
     mailingAddress:
         '<h3 data-block-key="nek5u">OpenStax</h3><p data-block-key="4sbtp">Rice University<br/>6100 Main Street MS-375<br/>Houston, TX 77005</p>',
     customerService:
-        '<p data-block-key="9iesw"><b>Need help?</b><br/>Visit our <a href="https://openstax.secure.force.com/help">Support Center</a>.<br/></p>',
+        '<p data-block-key="9iesw"><b>Need help?</b><br/>Visit our <a href="https://help.openstax.org">Support Center</a>.<br/></p>',
     promoteImage: null,
     slug: 'pages/contact'
 };