What's new link in footer (#692)

Changed link destination to go to the live page (which lives in the
guidance site)

---------

Co-authored-by: Frankie Roberto <frankie@frankieroberto.com>
Co-authored-by: Frankie Roberto <frankie.roberto1@nhs.net>

Author: Anna-Sutton

app/views/alerts/high-alert.html

@@ -21,7 +21,7 @@ <h1 class="nhsuk-panel__title" style="color:#212b32;">
 
             <br>
 
-            <a href="/updates" style="color:#005eb8;">Example link</a>
+            <a href="https://guide.ravs.england.nhs.uk/whats-new/" style="color:#005eb8;">Example link</a>
 
 
             <br><br>

app/views/home/index.html

@@ -24,7 +24,7 @@ <h1 class="nhsuk-heading-l nhsuk-u-margin-bottom-6">{% if currentOrganisation %}
 
 {% set insetTextHtml %}
   <p>Find out about the latest updates to the service:
-  <br><a href="/updates" title="External website">What's new (opens in new tab)</a></p>
+  <br><a href="https://guide.ravs.england.nhs.uk/whats-new/" title="External website">What's new (opens in new tab)</a></p>
 {% endset %}
 
 {{ insetText({

app/views/layout.html

@@ -39,7 +39,7 @@
           text: "User guide (opens in new tab)"
         },
         {
-          href: "/updates",
+          href: "https://guide.ravs.england.nhs.uk/whats-new/",
           text: "What's new (opens in new tab)"
         },
         {