Update editor config for .yml files

Signed-off-by: Joas Schilling <coding@schilljs.com>

.editorconfig

@@ -14,6 +14,10 @@ trim_trailing_whitespace = true
 indent_size = 2
 indent_style = space
 
+[*.yml]
+indent_size = 2
+indent_style = space
+
 [*.md]
 trim_trailing_whitespace = false