[glib] gmessages: Improve formatting of a #define in the docs

[Philip Withnall <pwithnall src gnome org>]

commit b778ba3e644d0e75597207d3c89eb5f3eedff8c6
Author: Philip Withnall <withnall endlessm com>
Date:   Fri Nov 10 10:13:50 2017 +0000

    gmessages: Improve formatting of a #define in the docs
    
    Signed-off-by: Philip Withnall <withnall endlessm com>
    
    https://bugzilla.gnome.org/show_bug.cgi?id=790157

 glib/gmessages.h |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/glib/gmessages.h b/glib/gmessages.h
index b5d1e6a..53a27dd 100644
--- a/glib/gmessages.h
+++ b/glib/gmessages.h
@@ -533,7 +533,7 @@ GPrintFunc      g_set_printerr_handler  (GPrintFunc      func);
  * the result is usually that a critical message is logged and the current
  * function returns.
  *
- * If G_DISABLE_CHECKS is defined then the check is not performed.  You
+ * If `G_DISABLE_CHECKS` is defined then the check is not performed.  You
  * should therefore not depend on any side effects of @expr.
  */
 #define g_return_if_fail(expr) G_STMT_START{ (void)0; }G_STMT_END
@@ -557,7 +557,7 @@ GPrintFunc      g_set_printerr_handler  (GPrintFunc      func);
  * the result is usually that a critical message is logged and @val is
  * returned from the current function.
  *
- * If G_DISABLE_CHECKS is defined then the check is not performed.  You
+ * If `G_DISABLE_CHECKS` is defined then the check is not performed.  You
  * should therefore not depend on any side effects of @expr.
  */
 #define g_return_val_if_fail(expr,val) G_STMT_START{ (void)0; }G_STMT_END