Update how-to-vote metadata

Amendments to the how to vote schema 🗳

Author: alex-ju

config/machine_readable/how-to-vote.yml

@@ -29,6 +29,8 @@ faqs:
         <li>16 years old in Scottish Parliament and local elections (and other elections when you’re 18)</li>
         <li>16 years old in Welsh Parliament elections (and other elections when you’re 18)</li>
       </ul>
+      <h2 id="elections-you-can-vote-in">Elections you can vote in</h2>
+      <p><a href="/elections-in-the-uk?src=schema">Different elections have different rules</a> on who can vote.</p>
 
   - question: Voting in person
     answer: >
@@ -40,7 +42,7 @@ faqs:
 
   - question: When you can vote
     answer: >
-      <p>Polling stations will be open from 7am to 10pm on 6 May ('polling day').</p>
+      <p>Polling stations will be open from 7am to 10pm on 6 May (‘polling day’).</p>
 
   - question: ID you need to bring
     answer: >
@@ -63,13 +65,6 @@ faqs:
         <li>permanently</li>
       </ul>
       <p>Arrange to <a href="/how-to-vote/voting-by-proxy?src=schema">vote by proxy</a> if there are under 2 weeks until election day and you have not made arrangements.</p>
-      <p>If you’re in Northern Ireland, you’ll need to apply <a rel="external" href="http://www.eoni.org.uk/Vote/Voting-by-post-or-proxy">using a paper application form</a>.</p>
-      <h3 id="postal-vote-deadlines-for-6-may-elections">Postal vote deadlines for 6 May elections</h3>
-      <p>If you want to vote by post on 6 May 2021, your application form must arrive at your local Electoral Registration Office by:</p>
-      <ul>
-        <li>20 April at 5pm if you’re registered to vote in England or Wales</li>
-        <li>6 April at 5pm if you’re registered to vote in Scotland</li>
-      </ul>
 
   - question: Voting by proxy
     answer: >
@@ -83,8 +78,6 @@ faqs:
       <h2 id="how-to-apply-for-a-proxy-vote">How to apply for a proxy vote</h2>
       <p><a href="/government/collections/proxy-voting-application-forms?src=schema">Apply for a proxy vote</a> using a paper form. You need to send it to your local <a href="/contact-electoral-registration-office?src=schema">Electoral Registration Office</a>.</p>
       <p>Usually, you need to apply for a proxy vote at least 6 working days before election day if you want to vote in England, Scotland or Wales.</p>
-      <p>There’s a different form to <a rel="external" href="http://www.eoni.org.uk/Vote/Voting-by-post-or-proxy">apply to vote by proxy in Northern Ireland</a>. Apply at least 14 working days before election day.</p>
-      <p>If you want to vote by proxy on 6 May 2021, your application form must arrive at your local Electoral Registration Office by 27 April at 5pm.</p>
 
   - question: Voting from abroad
     answer: >