Merge pull request AllenDowney#54 from jorge-e/patch-7

Fixes
F-Raven074 · Dec 30, 2019 · 4d3564e · 4d3564e
2 parents c46b255 + 54245db
commit 4d3564e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/book/book.tex b/book/book.tex
@@ -8472,7 +8472,7 @@ \section{Exercises}
 
 \begin{exercise}
 \index{append method}
-\index{method append}
+\index{method!append}
 \index{list!concatenation}
 \index{concatenation!list}