Grammar fixes for the routing guide.

railties/guides/source/routing.textile

@@ -596,7 +596,7 @@ match "/stories/:name" => redirect {|params| "/posts/#{params[:name].pluralize}"
 match "/stories" => redirect {|p, req| "/posts/#{req.subdomain}" }
 </ruby>
 
-Please note that this redirection is a 301 "Moved Permanently" redirect. Keep in mind that some web browser or proxy server will cache this type of redirect, make the old page inaccessible.
+Please note that this redirection is a 301 "Moved Permanently" redirect. Keep in mind that some web browsers or proxy servers will cache this type of redirect, making the old page inaccessible.
 
 In all of these cases, if you don't provide the leading host (+http://www.example.com+), Rails will take those details from the current request.