check

book.tex

@@ -16335,7 +16335,7 @@ The conclusion of every function should do the following:
 The output of this pass is \LangXIndCallFlat{}, which differs from
 \LangXIndCall{} in that there is no longer an AST node for function
 definitions. Instead, a program is just
-\racket{an association list}\python{dictionary}
+\racket{an association list}\python{a dictionary}
 of basic blocks, as in \LangXGlobal{}. So we have the following grammar rule:
 {\if\edition\racketEd
 \[