editorconfig: Place comments on a new line, as required by version >= 0.15.0

.editorconfig

@@ -10,10 +10,14 @@
 root = true
 
 [*]
-end_of_line = lf # Unix-style newlines
+# Unix-style newlines
-charset = utf-8 # All files are in UTF-8
+end_of_line = lf
-insert_final_newline = true # All files end with a newline
+# All files are in UTF-8
-trim_trailing_whitespace = true # No trailing whitespaces
+charset = utf-8
+# All files end with a newline
+insert_final_newline = true
+# No trailing whitespaces
+trim_trailing_whitespace = true
 
 [Makefile]
 indent_style = tab