Fix typos

Author: timhoffm

doc/release/next_whats_new/pyplot-register-figure.rst

@@ -50,8 +50,8 @@ reset to `.FigureCanvasBase` when the figure is closed. `.Figure.savefig` uses
 the current canvas to save the figure (if possible). Since `.FigureCanvasBase`
 can not render the figure, when saving the figure, it will fallback to a suitable
 canvas subclass, e.g. `.FigureCanvasAgg` for raster outputs such as png.
-Any Agg-based backend will create the same file output, however
-There may be slight differences for non-Agg backends; e.g. if you use "GTK4Cairo" as
+Any Agg-based backend will create the same file output. However, there may be
+slight differences for non-Agg backends; e.g. if you use "GTK4Cairo" as
 interactive backend, ``fig.savefig("file.png")`` may create a slightly different
 image depending on whether the figure is registered with pyplot or not. In
 general, you should not store a reference to the canvas, but rather always

lib/matplotlib/tests/test_backends_interactive.py

@@ -227,7 +227,7 @@ def check_alt_backend(alt_backend):
     # Ensure that the window is really closed.
     plt.pause(0.5)
 
-    # When the figure is closed, it's manager is removed and the canvas is reset to
+    # When the figure is closed, its manager is removed and the canvas is reset to
     # FigureCanvasBase. Saving should still be possible.
     assert type(fig.canvas) == FigureCanvasBase, str(fig.canvas)
     result_after = io.BytesIO()