Update create_duns_number.html with content suggestions
Update create_duns_number.html with content suggestions

As per:
https://docs.google.com/presentation/d/1sukhMNNbGTl3KDYYVedtBcNT5gQliaXjbrGW5Mrf2ak/edit#slide=id.g759a4b2e43_0_2
Discussion with Nora

alphagov/digitalmarketplace-supplier-frontend,alphagov/digitalmarketplace-supplier-frontend,alphagov/digitalmarketplace-supplier-frontend,alphagov/digitalmarketplace-supplier-frontend