DOC reorder whats new section

doc/whats_new/v1.0.rst

@@ -59,6 +59,14 @@ Changelog
 - |API| :class:`cluster.Birch` attributes, `fit_` and `partial_fit_`, are
   deprecated and will be removed in 1.2. :pr:`19297` by `Thomas Fan`_.
 
+:mod:`sklearn.datasets`
+.......................
+
+- |Enhancement| :func:`datasets.fetch_openml` now supports categories with
+  missing values when returning a pandas dataframe. :pr:`19365` by
+  `Thomas Fan`_ and :user:`Amanda Dsouza <amy12xx>` and
+  :user:`EL-ATEIF Sara <elateifsara>`.
+
 :mod:`sklearn.decomposition`
 ............................
 
@@ -166,20 +174,12 @@ Changelog
   and :user:`wstates <wstates>`.
 
 :mod:`sklearn.semi_supervised`
-.................................
+..............................
 
 - |Fix| Avoid NaN during label propagation in
   :class:`~sklearn.semi_supervised.LabelPropagation`.
   :pr:`19271` by :user:`Zhaowei Wang <ThuWangzw>`.
 
-:mod:`sklearn.datasets`
-.......................
-
-- |Enhancement| :func:`datasets.fetch_openml` now supports categories with
-  missing values when returning a pandas dataframe. :pr:`19365` by
-  `Thomas Fan`_ and :user:`Amanda Dsouza <amy12xx>` and
-  :user:`EL-ATEIF Sara <elateifsara>`.
-
 Code and Documentation Contributors
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