MAINT: Fix versionadded calls

docs/source/asv.conf.json.rst

@@ -287,20 +287,20 @@ the project being benchmarked may specify in its ``setup.py`` file.
  preface the package name with ``pip+``. For example, ``emcee`` is only
  available from ``pip``, so the package name to be used is ``pip+emcee``.
 
- .. versionadded::0.6.0
+ .. versionadded:: 0.6.0
 
  ``pip`` dependencies can now accept local (fully qualified) directories,
  and also take flags (e.g. ``-e``)
 
- .. versionadded::0.6.1
+ .. versionadded:: 0.6.1
 
  ``asv`` can now optionally load dependencies from ``environment.yml`` if
  ``conda`` or ``mamba`` is set as the ``environment_type``. As ``asv``
  dependencies are explicitly mentioned only in the ``asv.conf.json``.
  These specifications in ``environment.yml`` or another (user-defined)
  file will be overridden by the environment matrix.
 
- .. versionadded::0.6.2
+ .. versionadded:: 0.6.2
 
  The ``mamba`` plugin will now take channels and channel priority from the
  ``MAMBARC`` environment variable if it is provided. e.g.