Add v2 API documentation to API Access page

Author: momo3404

app/views/devise/registrations/_v2_api_token.html.erb

@@ -1,4 +1,5 @@
 <%# locals: user, token %>
+<% api_wikis = Rails.configuration.x.application.api_documentation_urls %>
 
 <div id="v2-api-token" class="card mb-4">
   <div class="card-heading">
@@ -43,6 +44,14 @@
               disabled: token.present?,
               data: { remote: true, url: api_v2_internal_user_access_token_path, method: :post } %>
       </div>
+      <div class="form-group mb-3 col-xs-12">
+        <%= label_tag(:api_information, _('Documentation'), class: 'form-label') %>
+        <br>
+        <%= sanitize(_('See the <a href="%{api_v2_wiki}">documentation for v2</a> for more details on the API.') %
+          { api_v2_wiki: api_wikis[:v2] },
+          attributes: %w[href]
+        )%>
+      </div>
     <% else %>
       <div class="alert alert-warning">
         <%= _("V2 API token service is currently unavailable. Please contact us for help.") %>

config/initializers/_dmproadmap.rb

@@ -79,7 +79,8 @@ class Application < Rails::Application
     # The link to the API documentation - used in emails about the API
     config.x.application.api_documentation_urls = {
       v0: 'https://github.com/DMPRoadmap/roadmap/wiki/API-V0-Documentation',
-      v1: 'https://github.com/DMPRoadmap/roadmap/wiki/API-V1-Documentation'
+      v1: 'https://github.com/DMPRoadmap/roadmap/wiki/API-v1-Documentation',
+      v2: 'https://github.com/DMPRoadmap/roadmap/wiki/API-v2-Documentation'
     }
     # The links that appear on the home page. Add any number of links
     config.x.application.welcome_links = [