fix: displayname_template lost during parsing to dict

roles/custom/matrix-bridge-mautrix-whatsapp/templates/config.yaml.j2

@@ -16,12 +16,6 @@ network:
     proxy_only_login: false
 
     # Displayname template for WhatsApp users.
-    # {% raw %}
-    # {{.PushName}}     - nickname set by the WhatsApp user
-    # {{.BusinessName}} - validated WhatsApp business name
-    # {{.Phone}}        - phone number (international format)
-    # {{.FullName}}     - Name you set in the contacts list
-    # {% endraw %}
     displayname_template: {{ matrix_mautrix_whatsapp_network_displayname_template | to_json }}
 
     # Should incoming calls send a message to the Matrix room?