Fixed variable in Commerce guide (#2756)

Author: mnocon

docs/ibexa_products/ibexa_commerce.md

@@ -35,7 +35,7 @@ With a help of documentation and trainings, any developer familiar with Symfony
 
 Version control systems and environment variables allow you to deploy your extensions and settings on several environments, such as [Ibexa Cloud](ibexa_cloud_guide.md).
 
-[[= product_name_com =]] is built on [[[= product_name_exp =]]](ibexa_experience.md) and includes all bundles, APIs, and features that come with both [[[= product_name_product_name_headless =]]](ibexa_headless.md#core-features) and [[[= product_name_exp =]]](ibexa_experience.md#core-features) editions.
+[[= product_name_com =]] is built on [[[= product_name_exp =]]](ibexa_experience.md) and includes all bundles, APIs, and features that come with both [[[= product_name_headless =]]](ibexa_headless.md#core-features) and [[[= product_name_exp =]]](ibexa_experience.md#core-features) editions.
 
 ## Capabilities and benefits