update changelog

CHANGELOG.rst

@@ -152,7 +152,7 @@ Regression information
 ~~~~~~~~~~~~~~~~~~~~~~
 #. ``tqdm`` is now a required dependency.
 #. Calls to :func:`sc.makepath() <sc_fileio.makepath>` and :func:`sc.makefilepath() <sc_fileio.makefilepath>` now need to specify ``makedirs=True``.
-# :class:`sc.odict() <sc_odict.odict>` is no longer an instance of :class:`OrderedDict <collections.OrderedDict>`.
+#. :class:`sc.odict() <sc_odict.odict>` is no longer an instance of :class:`OrderedDict <collections.OrderedDict>`.
 #. The ``returnpool`` argument of :func:`sc.parallelize() <sc_parallel.parallelize>` has been removed.
 #. For :func:`sc.savefig() <sc_plotting.savefig>`, ``freeze`` should be renamed ``pipfreeze``, and ``frame`` should be replaced with ``relframe`` with an offset of 2 (e.g. ``frame=2 → relframe=0``).
 #. :func:`sc.checkmem(..., alphabetical=True) <sc_profiling.checkmem>` has been replaced with :func:`sc.checkmem(..., order='alphabetical') <sc_profiling.checkmem>`