rails 3 fixes

app/views/wiki/edit.html.haml

@@ -4,7 +4,7 @@
 %h1.title= "Editar #{h(@wiki_page.title)}"
 
 %p
-  - form_tag course_wiki_instance_url(@course, @wiki_page.id), :method => :put do
+  = form_tag course_wiki_instance_url(@course, @wiki_page.id), :method => :put do
     = render :partial => 'form'
     = submit_tag 'Salvar', :accesskey => 'e'
     %button#show_preview{:type => "button", :accesskey => 'v'}

app/views/wiki/new.html.haml

@@ -4,7 +4,7 @@
 %h1.title Adicionar página wiki
 
 %p
-  - form_tag course_wiki_url(@course) do
+  = form_tag course_wiki_url(@course) do
     = render :partial => 'form'
     = submit_tag "Criar", :accesskey => 'e'
     %button#show_preview{:type => "button", :accesskey => 'v'}

app/views/wiki/versions.html.haml

@@ -8,7 +8,7 @@
   == radios_to = #{h(@history_to)};
   == radios_from = #{h(@history_from)};
 
-- form_tag diff_course_wiki_instance_url(@course, @wiki_page), :method => :get do
+= form_tag diff_course_wiki_instance_url(@course, @wiki_page), :method => :get do
   %button{:type => "submit"}= "Comparar as versões selecionadas"
   .box
     %table