Renamed switch-layout to i3-screen-layout

switch-layout → i3-screen-layout

@@ -1,7 +1,7 @@
 #!/bin/zsh -f
 
 if [[ $# -eq 0 ]] ; then
-    echo "switch-layout [ name | list | dmenu | define ]"
+    echo "i3-screen-layout [ name | list | dmenu | define ]"
     exit
 fi