DOC Fix a few typos in release highlights (#21096)

examples/release_highlights/plot_release_highlights_1_0_0.py

@@ -152,12 +152,12 @@
 scalar.feature_names_in_
 
 # %%
-# The support of :term:`get_feature_names_out` is avaliable for transformers
+# The support of :term:`get_feature_names_out` is available for transformers
 # that already had :term:`get_feature_names` and transformers with a one-to-one
 # correspondence between input and output such as
 # :class:`~preprocessing.StandardScalar`. :term:`get_feature_names_out` support
 # will be added to all other transformers in future releases. Additionally,
-# :meth:`compose.ColumnTransformer.get_feature_names_out` is avaliable to
+# :meth:`compose.ColumnTransformer.get_feature_names_out` is available to
 # combine feature names of its transformers:
 from sklearn.compose import ColumnTransformer
 from sklearn.preprocessing import OneHotEncoder