sanitize titles - experimental tag

lib/docs/filters/react/entries_react_dev.rb

@@ -2,7 +2,9 @@ module Docs
   class React
     class EntriesReactDevFilter < Docs::EntriesFilter
       def get_name
-        at_css('article h1').content
+        canary_copy = '- This feature is available in the latest Canary'
+        name = at_css('article h1').content
+        return name.sub(canary_copy, ' (experimental)')
       end
 
       def get_type