Apply suggestions from code review

Co-authored-by: hannah <story645@gmail.com>

Author: oscargus

lib/matplotlib/axes/_axes.py

@@ -217,8 +217,8 @@ def legend(self, *args, **kwargs):
 
         .. note::
             Specific artists can be excluded from the automatic legend element
-            selection by defining a label starting with an underscore, "_".
-            This is default for all artists, so calling `.Axes.legend` without
+            selection by using a label starting with an underscore, "_".
+            A string with an underscore is the default label for all artists, so calling `.Axes.legend` without
             any arguments and without setting the labels manually will result
             in no legend being drawn.
 

tutorials/intermediate/legend_guide.py

@@ -48,7 +48,7 @@
 to be created (see :ref:`proxy_legend_handles` for further details).
 
 .. note::
-    Those artists with an empty string as label or with a label starting with
+    Artists with an empty string as label or with a label starting with
     "_" will be ignored.
 
 For full control of what is being added to the legend, it is common to pass