DOC: Add changelog for masked_invalid change. (#22406)

This pull request add the changelog for #22046.
numpy · Oct 14, 2022 · 6d56ebb · 6d56ebb
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diff --git a/doc/release/upcoming_changes/22046.change.rst b/doc/release/upcoming_changes/22046.change.rst
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+``masked_invalid`` now modifies the mask in-place
+-----------------------------------------------------------------
+
+When used with ``copy=False``, `numpy.ma.masked_invalid` now modifies the
+input masked array in-place.
+This makes it now behave identical to ``masked_where`` and better matches the
+documentation.