[gimp] app: use "g" for gradient shortcut.

[Jehan Pagès <jehanp src gnome org>]

commit 6b0f5136e09f64a830b65037f48493fc0040674f
Author: Jehan <jehan girinstud io>
Date:   Sat Apr 14 14:27:36 2018 +0200

    app: use "g" for gradient shortcut.
    
    It makes more sense than "l" as a default, and "g" was currently unused.
    So not much left to ponder.

 app/tools/gimpgradienttool.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/app/tools/gimpgradienttool.c b/app/tools/gimpgradienttool.c
index 3837591..b66b15b 100644
--- a/app/tools/gimpgradienttool.c
+++ b/app/tools/gimpgradienttool.c
@@ -155,7 +155,7 @@ gimp_gradient_tool_register (GimpToolRegisterCallback  callback,
                 "gimp-gradient-tool",
                 _("Gradient"),
                 _("Gradient Tool: Fill selected area with a color gradient"),
-                N_("Gra_dient"), "L",
+                N_("Gra_dient"), "G",
                 NULL, GIMP_HELP_TOOL_GRADIENT,
                 GIMP_ICON_TOOL_GRADIENT,
                 data);