.editorconfig: Set line length to 80

And alphabetize properties.

.editorconfig

@@ -2,10 +2,11 @@
 root = true
 
 [*]
-indent_style = space
-indent_size = 2
-end_of_line = lf
 charset = utf-8
+end_of_line = lf
+indent_size = 2
+indent_style = space
+max_line_length = 80
 trim_trailing_whitespace = true
 
 [*.md]