[gnome-builder] libide: use lowercase r to not confuse about implicit shift

[Christian Hergert <chergert src gnome org>]

commit 7cdd734cebf4cffdb41a3b3a34e8912c84bc1b99
Author: Christian Hergert <christian hergert me>
Date:   Wed Mar 4 14:24:55 2015 -0800

    libide: use lowercase r to not confuse about implicit shift
    
    ie: there is no implicit shift

 data/keybindings/vim.css |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/data/keybindings/vim.css b/data/keybindings/vim.css
index 85435be..53ef533 100644
--- a/data/keybindings/vim.css
+++ b/data/keybindings/vim.css
@@ -96,7 +96,7 @@
 
   /* Undo & Redo */
   bind "u" { "undo" () };
-  bind "<ctrl>R" { "redo" () };
+  bind "<ctrl>r" { "redo" () };
 
   /* overwrite */
   bind "<shift>r" { "set-mode" ("vim-insert", permanent)