Adding Europace as a known instance

Author: spier

Diff for: patterns/2-structured/governance-levels.md

@@ -104,6 +104,7 @@ Examples of promoting the model names are:
 
 * BBC - referenced in this talk: [Ownership in a DevOps and InnerSource environment - Tom Sadler (BBC)](https://www.youtube.com/watch?v=O8TK7QG3FjM)
 * Flutter Entertainment
+* Europace AG
 
 ![InnerSource Pyramid used by Flutter Entertainment](../../assets/img/flutter-pyramid.svg)