[gimp] app: fix inconsistent capitalization.

[Jehan Pagès <jehanp src gnome org>]

commit 78077dcfa5935cfe0fe07e7e686e9b55df535ac9
Author: Jehan <jehan girinstud io>
Date:   Tue Mar 21 18:58:36 2017 +0100

    app: fix inconsistent capitalization.
    
    Thanks to piotrdrag for raising the issue on IRC.

 app/actions/view-actions.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/app/actions/view-actions.c b/app/actions/view-actions.c
index 4c05a58..6e5cb00 100644
--- a/app/actions/view-actions.c
+++ b/app/actions/view-actions.c
@@ -458,14 +458,14 @@ static const GimpToggleActionEntry view_flip_actions[] =
 {
   { "view-flip-horizontally", GIMP_ICON_OBJECT_FLIP_HORIZONTAL,
     NC_("view-action", "Flip Horizontally"), NULL,
-    NC_("view-action", "Flip the view Horizontally"),
+    NC_("view-action", "Flip the view horizontally"),
     G_CALLBACK (view_flip_horizontally_cmd_callback),
     FALSE,
     GIMP_HELP_VIEW_FLIP },
 
   { "view-flip-vertically", GIMP_ICON_OBJECT_FLIP_VERTICAL,
     NC_("view-action", "Flip Vertically"), NULL,
-    NC_("view-action", "Flip the view Vertically"),
+    NC_("view-action", "Flip the view vertically"),
     G_CALLBACK (view_flip_vertically_cmd_callback),
     FALSE,
     GIMP_HELP_VIEW_FLIP }