doc: group pretty-format.txt placeholders descriptions

diff --git a/midx.h b/midx.h
index 2d7c9c6cd1d829f3eb6aa924d316e54c6d4e9e00..1d6c21afe31b62024969f7cb91f9f78b19fe8e52 100644 (file)
--- a/midx.h
+++ b/midx.h
@@ -1,5 +1,5 @@
-#ifndef __MIDX_H__
-#define __MIDX_H__
+#ifndef MIDX_H
+#define MIDX_H
 
 #include "repository.h"