[IMP] subscriptions: physical product admonition
PROJECT TASK (requested adjustment): https://www.odoo.com/odoo/project.task/3990242?cids=3
-- added an important admonition block to the suggested subscriptions doc to ensure that the proper Invoicing Policy is in place when dealing with Physical Subscription Products
Hey @Felicious -- this super short PR (adding a single important admonition block, as requested in the linked Project in the Description) is ready for a Peer Review from you, whenever you get a chance! Thanks! 👍
Thank you for the helpful feedback on this VERY brief PR 😄 -- I implemented your suggestion, and believe this now ready for Final Review @StraubCreative (whenever you get a chance... just a quick admonition addition to an existing doc) 👍
Thanks for the helpful feedback, @StraubCreative -- I made those edits, and believe this one is ready for Tech Review (@samueljlieber ) 👍
