formula_creator: generate `head` stanza after `license`

Library/Homebrew/formula_creator.rb

@@ -91,9 +91,7 @@ module Homebrew
         <% end %>
           desc "#{desc}"
           homepage "#{homepage}"
-        <% if head? %>
-          head "#{url}"
-        <% else %>
+        <% unless head? %>
           url "#{url}"
         <% unless version.nil? or version.detected_from_url? %>
           version "#{version}"
@@ -101,6 +99,9 @@ module Homebrew
           sha256 "#{sha256}"
         <% end %>
           license "#{license}"
+        <% if head? %>
+          head "#{url}"
+        <% end %>
 
         <% if mode == :cmake %>
           depends_on "cmake" => :build