[Docs] Mention priorities in Catalog Promotions docs

Zales0123 · Zales0123 · commit 9ef04959a895 · 2021-10-29T13:55:03.000+02:00
diff --git a/docs/book/products/catalog_promotions.rst b/docs/book/products/catalog_promotions.rst
@@ -50,6 +50,17 @@ Rest of the fields are used for configuration:
         # ...
     }
 
+* **Priority** is used to define which promotion should be applied first. Promotions are applied in the descending order.
+The default priority is `0`:
+
+.. code-block:: bash
+
+    {
+        # ...
+        "priority": 100
+        # ...
+    }
+
 * **Scopes** are used to define scopes on which the catalog promotion will work:
 
 .. code-block:: bash
