Updates .editorconfig.

.editorconfig

@@ -1,15 +1,15 @@
-; This file is for unifying the coding style for different editors and IDEs.
-; More information at http://editorconfig.org
-
 root = true
 
 [*]
 charset = utf-8
-indent_size = 4
-indent_style = space
 end_of_line = lf
 insert_final_newline = true
+indent_style = space
+indent_size = 4
 trim_trailing_whitespace = true
 
 [*.md]
 trim_trailing_whitespace = false
+
+[*.{yml,yaml}]
+indent_size = 2