Change key combo for splith to $mod+h

reform2-imx8mq/template-skel/.config/sway/config

@@ -161,7 +161,7 @@ hide_edge_borders both
     # You can "split" the current object of your focus with
     # $mod+b or $mod+v, for horizontal and vertical splits
     # respectively.
-    bindsym $mod+b splith
+    bindsym $mod+h splith
     bindsym $mod+v splitv
 
     # Switch the current container between different layout styles