Allow special characters in Grafana password

docs/configuring-playbook-prometheus-grafana.md

@@ -17,11 +17,10 @@ matrix_grafana_anonymous_access: false
 
 # This has no relation to your Matrix user id. It can be any username you'd like.
 # Changing the username subsequently won't work.
-matrix_grafana_default_admin_user: some_username_chosen_by_you
+matrix_grafana_default_admin_user: "some_username_chosen_by_you"
 
-# Passwords containing special characters may be troublesome.
 # Changing the password subsequently won't work.
-matrix_grafana_default_admin_password: some_strong_password_chosen_by_you
+matrix_grafana_default_admin_password: "some_strong_password_chosen_by_you"
 ```
 
 By default, a [Grafana](https://grafana.com/) web user-interface will be available at `https://stats.<your-domain>`.

roles/matrix-grafana/templates/grafana.ini.j2

@@ -1,16 +1,16 @@
 [security]
 # default admin user, created on startup
-admin_user = {{ matrix_grafana_default_admin_user }}
+admin_user = "{{ matrix_grafana_default_admin_user }}"
 
-# default admin password, can be changed before first start of grafana,  or in profile settings
-admin_password = {{ matrix_grafana_default_admin_password }}
+# default admin password, can be changed before first start of grafana, or in profile settings
+admin_password = """{{ matrix_grafana_default_admin_password }}"""
 
 [auth.anonymous]
 # enable anonymous access
 enabled = {{ matrix_grafana_anonymous_access }}
 
 # specify organization name that should be used for unauthenticated users
-org_name = {{ matrix_grafana_anonymous_access_org_name }}
+org_name = "{{ matrix_grafana_anonymous_access_org_name }}"
 
 [dashboards]
 {% if matrix_synapse_metrics_enabled %}