Fix typos in release notes

Author: mwaskom

doc/whatsnew/v0.12.1.rst

@@ -16,7 +16,7 @@ This is an incremental release that is a recommended upgrade for all users. It a
 
 - |Enhancement| |Defaults| The :class:`objects.Jitter` move now applies a small amount of jitter by default (:pr:`3066`).
 
-- |Enhancement| |Defaults| Axes with a :class:`objects.Nominal` scale now appear like categorical axes in class seaborn, with fixed margins, no grid, and an inverted y axis (:pr:`3069`).
+- |Enhancement| |Defaults| Axes with a :class:`objects.Nominal` scale now appear like categorical axes in classic seaborn, with fixed margins, no grid, and an inverted y axis (:pr:`3069`).
 
 - |Enhancement| |API| The :meth:`objects.Continuous.label` method now accepts `base=None` to override the default formatter with a log transform (:pr:`3087`).
 
@@ -28,7 +28,7 @@ This is an incremental release that is a recommended upgrade for all users. It a
 
 - |Fix| Made :class:`objects.PolyFit` robust to missing data (:pr:`3010`).
 
-- |Fix| Fixed a bug in :class:`objects.Plot` that occurred when the orient coordinate data had zero variance (:pr:`3084`).
+- |Fix| Fixed a bug in :class:`objects.Plot` that occurred when data assigned to the orient coordinate had zero variance (:pr:`3084`).
 
 - |Fix| Fixed a regression in :func:`kdeplot` where passing `cmap` for an unfilled bivariate plot would raise an exception (:pr:`3065`).