[IMP] PoS/Hardware: add Google Play link to dual-screen support

Author: tong-odoo

content/applications/sales/point_of_sale/pos_hardware.rst

@@ -72,7 +72,9 @@ cable, follow these steps:
 #. Click the :icon:`fa-desktop` (:guilabel:`Customer Display`) icon, which opens a new window to
    drag onto the second screen.
 
-For POS terminals running the Odoo Android app with dual-screen support,
+For POS terminals running the
+`Odoo <https://play.google.com/store/apps/details?id=com.odoo.mobile>`_ Android app with dual-screen
+support,
 
 #. :doc:`Activate the Point of Sale Mobile module <../../general/apps_modules>` to enable the
    customer display.