Fix grid+calendar page titles (#22401)

diff --git a/airflow/www/templates/airflow/calendar.html b/airflow/www/templates/airflow/calendar.html
index 05aa425..6c0189b 100644
--- a/airflow/www/templates/airflow/calendar.html
+++ b/airflow/www/templates/airflow/calendar.html
@@ -18,7 +18,7 @@
 #}
 
 {% extends "airflow/dag.html" %}
-{% block page_title %}{{ dag.dag_id }} - Tree - {{ appbuilder.app_name }}{% endblock %}
+{% block page_title %}{{ dag.dag_id }} - Calendar - {{ appbuilder.app_name }}{% endblock %}
 
 {% block head_css %}
   {{ super() }}
diff --git a/airflow/www/templates/airflow/tree.html b/airflow/www/templates/airflow/tree.html
index d76de75..1394cbc 100644
--- a/airflow/www/templates/airflow/tree.html
+++ b/airflow/www/templates/airflow/tree.html
@@ -18,7 +18,7 @@
 #}
 
 {% extends "airflow/dag.html" %}
-{% block page_title %}{{ dag.dag_id }} - Tree - {{ appbuilder.app_name }}{% endblock %}
+{% block page_title %}{{ dag.dag_id }} - Grid - {{ appbuilder.app_name }}{% endblock %}
 {% from 'appbuilder/loading_dots.html' import loading_dots %}
 
 {% block head_meta %}