Commerce editing content for products
I believe that functionality is provided by the Inline Entity Form module

Provides a widget for inline management (creation, modification, removal) of referenced entities.
The primary use case is the parent -&gt; children one (product display -&gt; products, order -&gt; line items, etc.), where the child entities are never managed outside the parent form.

Edit: In fact it definitely is, this is an image from the module page: