Apply suggestions from code review

Co-authored-by: Tim Hoffmann <[email protected]>

Author: jklymak

doc/users/faq/howto_faq.rst

@@ -72,7 +72,7 @@ ticks:
 
 .. _howto-determine-artist-extent:
 
-Determine the extent of Artists on the Figure
+Determine the extent of Artists in the Figure
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 Sometimes we want to know the extent of an Artist.  Matplotlib `.Artist` objects