Fix response when modeling pet from Modeling Hub homepage form

This was always modeling correctly, but not showing the message,
because Turbo doesn't handle anchors in redirect URLs the same way the
browser's full page loads do.

I forget why we had this as a `#` URL anyway to begin with. Use `?`
instead!

app/controllers/pets_controller.rb

@@ -14,7 +14,7 @@ class PetsController < ApplicationController
     
     respond_to do |format|
       format.html do
-        path = destination + @pet.wardrobe_query
+        path = destination + "?" + @pet.wardrobe_query
         redirect_to path
       end
       
@@ -38,9 +38,9 @@ class PetsController < ApplicationController
   
   def destination
     case (params[:destination] || params[:origin])
-      when 'wardrobe'     then wardrobe_path     + '?'
-      when 'needed_items' then needed_items_path + '?'
-      else                     root_path         + '#'
+      when 'wardrobe'     then wardrobe_path
+      when 'needed_items' then needed_items_path
+      else                     root_path
     end
   end