[glib] docs: tut_gsignal: Fix mismatched argument names

[Daniel Boles <dboles src gnome org>]

commit 522ba7303ea4302dd3b36221304d309efaaca238
Author: Daniel Boles <dboles src gnome org>
Date:   Tue Jul 11 12:49:40 2017 +0100

    docs: tut_gsignal: Fix mismatched argument names
    
    The names differed between the argument declaration and its description.

 docs/reference/gobject/tut_gsignal.xml |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/docs/reference/gobject/tut_gsignal.xml b/docs/reference/gobject/tut_gsignal.xml
index 6a1420a..f990ab8 100644
--- a/docs/reference/gobject/tut_gsignal.xml
+++ b/docs/reference/gobject/tut_gsignal.xml
@@ -250,7 +250,7 @@ guint g_signal_newv (const gchar        *signal_name,
                          closures.
                        </para></listitem>
                  <listitem><para>
-                         <parameter>accumulator_data</parameter>: this pointer will be passed down to each 
invocation of the
+                         <parameter>accu_data</parameter>: this pointer will be passed down to each 
invocation of the
                          accumulator during emission.
                        </para></listitem>
                  <listitem><para>