Update page title and header

app/templates/views/guidance/who-its-for.html

@@ -2,13 +2,13 @@
 {% from "components/page-header.html" import page_header %}
 
 {% block per_page_title %}
-  Who it’s for
+  Who can use Notify
 {% endblock %}
 
 {% block content_column_content %}
 
   {{ page_header(
-    'Who it’s for'
+    'Who can use Notify'
   ) }}
 
   <p class="govuk-body">