Fix page title on activity breakdown

app/templates/views/dashboard/monthly.html

@@ -6,7 +6,9 @@
 {% extends "withnav_template.html" %}
 
 {% block page_title %}
-  Previous weeks – GOV.UK Notify
+  Activity breakdown
+  {{ selected_year }} to {{ selected_year + 1 }} financial year
+  – GOV.UK Notify
 {% endblock %}
 
 {% block maincolumn_content %}