fix frontmatter

This commit is contained in:
Ilkka Seppälä
2021-10-12 14:30:49 +03:00
parent c6c4e6ebb6
commit c3ef3dbe8c

View File

@ -4,6 +4,7 @@ category: Behavioral
language: en
tags:
- Gang of Four
---
## Also known as