docs: document tax-inclusive promotions concept (#12849)

www/packages/tags/src/tags/order.ts

@@ -39,6 +39,10 @@ export const order = [
     "title": "Implement Quote Management",
     "path": "https://docs.medusajs.com/resources/examples/guides/quote-management"
   },
+  {
+    "title": "Add Gift Message",
+    "path": "https://docs.medusajs.com/resources/how-to-tutorials/tutorials/gift-message"
+  },
   {
     "title": "Implement Loyalty Points",
     "path": "https://docs.medusajs.com/resources/how-to-tutorials/tutorials/loyalty-points"

www/packages/tags/src/tags/tax.ts

@@ -7,6 +7,10 @@ export const tax = [
     "title": "Get Variant Price with Taxes",
     "path": "https://docs.medusajs.com/resources/commerce-modules/product/guides/price-with-taxes"
   },
+  {
+    "title": "Tax-Inclusive Promotions",
+    "path": "https://docs.medusajs.com/resources/commerce-modules/promotion/promotion-taxes"
+  },
   {
     "title": "Example: Show Price with Taxes",
     "path": "https://docs.medusajs.com/resources/storefront-development/products/price/examples/tax-price"