Fix typos [skip ci]

Author: larrybradley

tutorials/intermediate/legend_guide.py

@@ -68,7 +68,7 @@
 
 Not all handles can be turned into legend entries automatically,
 so it is often necessary to create an artist which *can*. Legend handles
-don't have to exists on the Figure or Axes in order to be used.
+don't have to exist on the Figure or Axes in order to be used.
 
 Suppose we wanted to create a legend which has an entry for some data which
 is represented by a red color:
@@ -104,7 +104,7 @@
 # The ``bbox_to_anchor`` keyword gives a great degree of control for manual
 # legend placement. For example, if you want your axes legend located at the
 # figure's top right-hand corner instead of the axes' corner, simply specify
-# the corner's location, and the coordinate system of that location::
+# the corner's location and the coordinate system of that location::
 #
 #     plt.legend(bbox_to_anchor=(1, 1),
 #                bbox_transform=plt.gcf().transFigure)