Update editorconfig rules (modxcms#15520)

Author: Ibochkarev

.editorconfig

@@ -7,29 +7,11 @@ end_of_line = lf
 insert_final_newline = true
 trim_trailing_whitespace = true
 indent_style = space
-tab_width = 4
+indent_size = 4
 max_line_length = off
 
 [**.scss]
-tab_width = 2
-
-[**.js]
-tab_width = 4
-
-[**.coffee]
-tab_width = 4
-
-[**.cson]
-tab_width = 4
-
-[**.json]
-tab_width = 4
-
-[**rc]
-tab_width = 4
-
-[**php]
-tab_width = 4
+indent_size = 2
 
 [*.md]
 max_line_length = off