minor edits to the README, added EN screenshot showing noderef linking

git-svn-id: https://share-extras.googlecode.com/svn/trunk/Sandbox/Audit Dashlet@385 a3f5c567-fd0f-3a89-9b71-a290c5a5f590

Author: romainguinot

README.txt

@@ -84,6 +84,8 @@ the dashlet into one of the columns from the list of dashlets.
 
     - to search for a colon (:), use the field prefix, eg; field:.+:.+ or values:[^:]+: etc... otherwise the colon will be interpreted
       as a field identifier
+    
+    - noderefs in the values will be detected, and "enhanced" with a link to the docdetails page of that noderef
 
     - multi field search is currently not supported, e.g +id:95 -name:romain. Would have to support ( ) , and/or grouping ,etc ...