More fixes for the changelog.

doc/whats_new.rst

@@ -55,7 +55,7 @@ Changelog
     :class:`linear_model.LogisticRegression` [`Fabian Pedregosa`_].
 
   - Performance and API improvements to
-    :func:`metrics.euclidian_distances` and to
+    :func:`metrics.euclidean_distances` and to
     :class:`pca.RandomizedPCA` [`James Bergstra`_].
 
   - Fix compilation issues under NetBSD [Kamel Ibn Hassen Derouiche]