[devhelp] DhSettings: rename function parameter

[Sébastien Wilmet <swilmet src gnome org>]

commit aa2836b85a89df04515513f1f0da9e77651b0fdf
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Fri Apr 28 14:26:07 2017 +0200

    DhSettings: rename function parameter
    
    The DhSettings object is currently called 'self', but another name could
    be 'settings'. 'settings_fonts' avoids all possible confusions.

 src/dh-settings.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/dh-settings.c b/src/dh-settings.c
index 692d9e9..3acb17c 100644
--- a/src/dh-settings.c
+++ b/src/dh-settings.c
@@ -94,7 +94,7 @@ dh_settings_class_init (DhSettingsClass *klass)
 }
 
 static void
-fonts_changed_cb (GSettings *settings,
+fonts_changed_cb (GSettings *settings_fonts,
                   gchar     *key,
                   gpointer   user_data)
 {