Update documentation

Author: AllenDowney

.buildinfo

@@ -1,4 +1,4 @@
 # Sphinx build info version 1
 # This file hashes the configuration used when building these files. When it is not found, a full rebuild will be done.
-config: 6884e2e1278991ec8cb6843ea5d5149c
+config: e88ec6554c2cf7c49cef35641b1ffe6c
 tags: 645f666f9bcd5a90fca523b33c5a78b7

_sources/chap00.ipynb

@@ -50,7 +50,7 @@
     "\n",
     "Writing this book, I tried to be careful with the vocabulary.\n",
     "I define each term when it first appears.\n",
-    "And there is a glossary that the end of each chapter that reviews the terms that were introduced.\n",
+    "And there is a glossary at the end of each chapter that reviews the terms that were introduced.\n",
     "\n",
     "I also tried to be concise.\n",
     "The less mental effort it takes to read the book, the more capacity you will have for programming.\n",

_sources/chap10.ipynb

@@ -1729,7 +1729,7 @@
    "id": "170f1deb",
    "metadata": {},
    "source": [
-    "### Ask an assistant\n",
+    "### Ask a virtual assistant\n",
     "\n",
     "In this chapter, I said the keys in a dictionary have to be hashable and I gave a short explanation. If you would like more details, ask a virtual assistant, \"Why do keys in Python dictionaries have to be hashable?\"\n",
     "\n",