chore: update editorconfig

Author: kenjis

.editorconfig

@@ -1,13 +1,15 @@
-; top-most EditorConfig file
+; This file is for unifying the coding style for different editors and IDEs.
+; More information at http://editorconfig.org
+
 root = true
 
-; Unix-style newlines
 [*]
-end_of_line = lf
-
-[*.php]
-indent_style = space
-indent_size = 4
 charset = utf-8
-trim_trailing_whitespace = true
+indent_size = 4
+indent_style = space
+end_of_line = lf
 insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.yml]
+indent_size = 2