Update editorconfig

.editorconfig

@@ -1,13 +1,12 @@
 root = true
 
 [*]
-charset = utf-8
 end_of_line = lf
 insert_final_newline = true
 trim_trailing_whitespace = true
 indent_style = tab
 indent_size = 4
 
-[{.jshintrc,*.json,*.yml}]
+[*.{json,yml,md,jshintrc}]
 indent_style = space
 indent_size = 2