Update documentation and translation

docs/index.md

@@ -565,12 +565,15 @@ plugins.post_analysis.feeds
     Post analysis hook
     
     Find feeds parsers (first hit in feeds conf value and no viewed pages if it's a robot)
+    If there is ony one hit per day to a feed, merge feeds parsers with the same user agent
+    as it must be the same person with a different IP address.
     
     Plugin requirements :
         None
     
     Conf values needed :
         feeds
+        merge_one_hit_only_feeds_parsers*
     
     Output files :
         None