Add Ctrl-i alias for Windows (helix-editor#4961)

Author: lesleyrs

helix-term/src/keymap/default.rs

@@ -198,7 +198,7 @@ pub fn default() -> HashMap<Mode, Keymap> {
 
         // z family for save/restore/combine from/to sels from register
 
-        "tab" => jump_forward, // tab == <C-i>
+        "C-i" | "tab" => jump_forward, // tab == <C-i>
         "C-o" => jump_backward,
         "C-s" => save_selection,