Update "Documenting" a bit. Concentrate on Python-specifics.
diff --git a/Doc/documenting/index.rst b/Doc/documenting/index.rst
index 5adbd46..5ec9fb6 100644
--- a/Doc/documenting/index.rst
+++ b/Doc/documenting/index.rst
@@ -8,7 +8,7 @@
 The Python language has a substantial body of documentation, much of it
 contributed by various authors. The markup used for the Python documentation is
 `reStructuredText`_, developed by the `docutils`_ project, amended by custom
-directives and using a toolset named *Sphinx* to postprocess the HTML output.
+directives and using a toolset named `Sphinx`_ to postprocess the HTML output.
 
 This document describes the style guide for our documentation, the custom
 reStructuredText markup introduced to support Python documentation and how it
@@ -16,6 +16,7 @@
 
 .. _reStructuredText: http://docutils.sf.net/rst.html
 .. _docutils: http://docutils.sf.net/
+.. _Sphinx: http://sphinx.pocoo.org/
 
 If you're interested in contributing to Python's documentation, there's no need
 to write reStructuredText if you're not so inclined; plain text contributions
@@ -28,7 +29,3 @@
    rest.rst
    markup.rst
    fromlatex.rst
-   sphinx.rst
-
-.. XXX add credits, thanks etc.
-