[gimp] app: fix dashboard help id.

[Jehan Pagès <jehanp src gnome org>]

commit 8a24de6557869585f9609080758ce612e4d09348
Author: Jehan <jehan girinstud io>
Date:   Mon Apr 2 18:51:41 2018 +0200

    app: fix dashboard help id.
    
    It was using the errors dialog help id. Probably just copy-paste error.

 app/dialogs/dialogs.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/app/dialogs/dialogs.c b/app/dialogs/dialogs.c
index ee744b8..9e36d5b 100644
--- a/app/dialogs/dialogs.c
+++ b/app/dialogs/dialogs.c
@@ -324,7 +324,7 @@ static const GimpDialogFactoryEntry entries[] =
             dialogs_cursor_view_new, 0, TRUE),
   DOCKABLE ("gimp-dashboard",
             N_("Dashboard"), N_("Dashboard"), GIMP_ICON_DIALOG_DASHBOARD,
-            GIMP_HELP_ERRORS_DIALOG,
+            GIMP_HELP_DASHBOARD_DIALOG,
             dialogs_dashboard_new, 0, TRUE),
 
   /*  list & grid views  */