better wizard intro when installing z4h

internal/wizard.zsh

@@ -423,9 +423,12 @@ function ask() {
 local -i greeting_printed=0
 
 function print_greeting() {
-  (( in_z4h_wizard )) && return
   (( greeting_printed )) && return
-  if (( force )); then
+  if (( in_z4h_wizard )); then
+    flowing -c %3FZsh for Humans%f uses %4FPowerlevel10k%f to print command        \
+               line prompt. This wizard will ask you a few questions and configure \
+               prompt for you.
+  else (( force )); then
     flowing -c This is %4FPowerlevel10k configuration wizard%f. \
                It will ask you a few questions and configure your prompt.
   else