Revise ReadMe entry for "Better Code Samples"

Readme.rst

@@ -48,7 +48,7 @@ Backref Translate         Add a new attribute (``is_translation_of``) to every a
 
 Better code line numbers  Allow code blocks with line numbers to wrap
 
-Better code samples       Wraps all ``table`` blocks with a class attribute ``.codehilitetable`` in an additional ``div`` of class ``.hilitewrapper``. It thus permits to style codeblocks better, especially to make them scrollable.
+Better code samples       Wraps ``table`` blocks with ``div > .hilitewrapper > .codehilitetable`` class attribute, allowing for scrollable code blocks.
 
 Better figures/samples    Adds a ``style="width: ???px; height: auto;"`` attribute to any ``<img>`` tags in the content