DOC: Correct a few typos in documentation [ci doc] (matplotlib#31349)

Author: star1327p

galleries/users_explain/toolkits/axisartist.rst

@@ -517,7 +517,7 @@ required. ::
                                                      )
 
     # Find a grid values appropriate for the coordinate (degree,
-    # minute, second). The argument is a approximate number of grids.
+    # minute, second). The argument is an approximate number of grids.
     grid_locator1 = angle_helper.LocatorDMS(12)
 
     # And also uses an appropriate formatter.  Note that the acceptable Locator

lib/matplotlib/tests/test__style_helpers.py

@@ -59,7 +59,7 @@ def test_style_generator_raises_on_empty_style_parameter_list(key):
 def test_style_generator_sequence_type_styles():
     """
     Test that sequence type style values are detected as single value
-    and passed to a all elements of the generator.
+    and passed to all elements of the generator.
     """
     kw = {'facecolor':  ('r', 0.5),
           'edgecolor': [0.5, 0.5, 0.5],

lib/matplotlib/tests/test_axes.py

@@ -1183,7 +1183,7 @@ def test_limits_empty_data(plot_fun, fig_test, fig_ref):
 def test_imshow():
     # use former defaults to match existing baseline image
     matplotlib.rcParams['image.interpolation'] = 'nearest'
-    # Create a NxN image
+    # Create an NxN image
     N = 100
     (x, y) = np.indices((N, N))
     x -= N//2
@@ -1207,7 +1207,7 @@ def test_imshow_clip():
     # use former defaults to match existing baseline image
     matplotlib.rcParams['image.interpolation'] = 'nearest'
 
-    # Create a NxN image
+    # Create an NxN image
     N = 100
     (x, y) = np.indices((N, N))
     x -= N//2