Update Less documentation (2.7.1)

lib/docs/filters/less/entries.rb

@@ -6,7 +6,7 @@ module Docs
       end
 
       def type
-        root_page? ? 'Language' : nil
+        root_page? ? 'Language' : 'Functions'
       end
 
       def additional_entries

lib/docs/scrapers/less.rb

@@ -1,7 +1,7 @@
 module Docs
   class Less < UrlScraper
     self.type = 'less'
-    self.release = '2.6.1'
+    self.release = '2.7.1'
     self.base_url = 'http://lesscss.org'
     self.root_path = '/features'
     self.initial_paths = %w(/functions)