Workaround sphinx issue

`version <URL>`_ implicitly creates a sphinx label "version", but unfortunately the section already has that label. To work around this, I expanded the link from the word "version" to "distribution package version".

Author: timhoffm

Doc/library/importlib.metadata.rst

@@ -268,8 +268,7 @@ Distribution versions
 
 .. function:: version(distribution_name)
 
-   Return the installed distribution package
-   `version <https://packaging.python.org/en/latest/specifications/core-metadata/#version>`_
+   Return the installed `distribution package version <https://packaging.python.org/en/latest/specifications/core-metadata/#version>`_
    for the named distribution package.
 
    Raises :exc:`PackageNotFoundError` if the named distribution