Separate the forge URL from the paragraph about it

This makes it easier to see the URL and format the text in email clients.

swh/web/add_forge_now/assets/forge-admin-email.ejs

@@ -9,9 +9,11 @@ Hello <%= forgeAdmin %>,
 The mission of Software Heritage is to collect, preserve and share all
 the publicly available source code: https://www.softwareheritage.org
 
-We just received a request to add the forge hosted at <%= forgeUrl %>
+We have received a request to add the forge hosted at the URL below
 to the list of software origins that are archived, and it is our
-understanding that you are the contact person for this forge.
+understanding that you are or know the contact person for this forge.
+
+<%= forgeUrl %>
 
 In order to archive the forge contents, we will have to periodically
 pull the public repositories it contains and clone them into the