fix: translate My Account menu items to Spanish

- "Odoo Invoices" → "Mis Facturas"
- "Book a Meeting" → "Reservar Reunión"

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

includes/class-woodoo-calendar.php

@@ -27,7 +27,7 @@ class WooDoo_Calendar {
     }
 
     public static function add_menu_item( array $items ): array {
-        $items[ self::ENDPOINT ] = __( 'Book a Meeting', 'woodoo' );
+        $items[ self::ENDPOINT ] = 'Reservar Reunión';
         return $items;
     }