Fix deprecation warning

DEPRECATION WARNING: Passing the format in the template name is deprecated. Please pass render with :formats => [:html] instead.

app/controllers/salmon_controller.rb

@@ -15,7 +15,7 @@ def feeds
     status 200
     return
   rescue MongoMapper::DocumentNotFound, ArgumentError, RstatUs::InvalidSalmonMessage
-    render :file => "#{Rails.root}/public/404.html", :status => 404
+    render :file => "#{Rails.root}/public/404", :status => 404
     return
   end
 end

app/controllers/updates_controller.rb

@@ -32,7 +32,7 @@ def show
     if @update
       render :layout => "update"
     else
-      render :file => "#{Rails.root}/public/404.html", :status => 404
+      render :file => "#{Rails.root}/public/404", :status => 404
     end
   end
 

app/controllers/users_controller.rb

@@ -18,7 +18,7 @@ def index
 
   def show
     if @user.nil?
-      render :file => "#{Rails.root}/public/404.html", :status => 404
+      render :file => "#{Rails.root}/public/404", :status => 404
     elsif @user.username != params[:id] # case difference
       @title = @user.username
       redirect_to user_path(@user)
@@ -106,15 +106,15 @@ def feed
     if @user
       redirect_to feed_path(@user.feed, :format => :atom)
     else
-      render :file => "#{Rails.root}/public/404.html", :status => 404
+      render :file => "#{Rails.root}/public/404", :status => 404
     end
   end
 
   # Who do you think is a really neat person? This page will show it to the
   # world, so pick wisely!
   def following
     if @user.nil?
-      render :file => "#{Rails.root}/public/404.html", :status => 404
+      render :file => "#{Rails.root}/public/404", :status => 404
     # If the username's case entered in the URL is different than the case
     # specified by that user, redirect to the case that the user prefers
     elsif @user.username != params[:id]
@@ -147,7 +147,7 @@ def following
   # followers. Only one way to find out...
   def followers
     if @user.nil?
-      render :file => "#{Rails.root}/public/404.html", :status => 404
+      render :file => "#{Rails.root}/public/404", :status => 404
     # If the username's case entered in the URL is different than the case
     # specified by that user, redirect to the case that the user prefers
     elsif @user.username != params[:id]

app/controllers/webfinger_controller.rb

@@ -16,7 +16,7 @@ def xrd
       @base_url = root_url
       render "xml/webfinger/xrd", :layout => false, :content_type => "application/xrd+xml"
     else
-      render :file => "#{Rails.root}/public/404.html", :status => 404
+      render :file => "#{Rails.root}/public/404", :status => 404
     end
   end
 end