Update help page email

app/views/pages/help.html.erb

@@ -1,7 +1,7 @@
 <div class="govuk-grid-row">
   <div class="govuk-grid-column-two-thirds">
     <h2 class="govuk-heading-l">Help</h2>
-    <p class="govuk-body">Contact Southwark Council at <a href="mailto:buildingsafety@southwark.gov.uk">[email protected]</a>
+    <p class="govuk-body">Contact Southwark Council at <a href="mailto:privatebuildingsafety@southwark.gov.uk">[email protected]</a>
       if you have questions about the information required in the Building Safety Survey. </p>
     <p class="govuk-body">
       Please include the reference number (UPRN) when contacting Southwark Council. This number was included in the initial email or letter you received about the survey.