Updating the notebooks

Author: AllenDowney

chapters/chap10.ipynb

@@ -1257,7 +1257,7 @@
  "\n",
  "As you work with bigger datasets it can become unwieldy to debug by printing and checking the output by hand. Here are some suggestions for debugging large datasets:\n",
  "\n",
- "1) Scale down the input: If possible, reduce the size of the dataset. For example if the\n",
+ "1.  Scale down the input: If possible, reduce the size of the dataset. For example if the\n",
  " program reads a text file, start with just the first 10 lines, or\n",
  " with the smallest example you can find. You can either edit the\n",
  " files themselves, or (better) modify the program so it reads only\n",