Routing: fix error in nested resources with name_prefix example [#146 state:resolved]

railties/guides/source/routing.textile

@@ -717,7 +717,7 @@ resources :magazines do
 end
 </ruby>
 
-This will create routing helpers such as +periodical_ads_url+ and +periodical_edit_ad_path+.
+This will create routing helpers such as +magazine_periodical_ads_url+ and +edit_magazine_periodical_ad_path+.
 
 h3. Inspecting and Testing Routes