[FIX] mail: improve wording of 'report_template_ids' template field

Improve 'report_template_ids' label. Followup of odoo/odoo#99482

Task-2868153 (Mail: Allow multi-reports mail templates)

Part-of: odoo/odoo#107356

addons/mail/models/mail_template.py

@@ -68,7 +68,7 @@ class MailTemplate(models.Model):
         'ir.actions.report', relation='mail_template_ir_actions_report_rel',
         column1='mail_template_id',
         column2='ir_actions_report_id',
-        string='Reports to print and attach',
+        string='Dynamic Reports',
         domain="[('model', '=', model)]")
     # options
     mail_server_id = fields.Many2one('ir.mail_server', 'Outgoing Mail Server', readonly=False,