chore: update editorconfig

Author: NTBBloodbath

.editorconfig

@@ -2,12 +2,13 @@ root = true
 
 [*]
 indent_style = space
-indent_size = 2
-tab_width = 4
+indent_size = 4
+charset = utf-8
 end_of_line = lf
 insert_final_newline = true
+trim_trailing_whitespace = true
 
-[*.{c,h,in,lua}]
+[*.{md,lua}]
 max_line_length = 100
 
 [{Makefile,**/Makefile}]