Fix TOC

Author: ewinge

03_Dictionaries.ipynb

@@ -263,9 +263,9 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.7.10"
+   "version": "3.8.8"
   }
  },
  "nbformat": 4,
- "nbformat_minor": 2
+ "nbformat_minor": 4
 }

_toc.yml

@@ -1,16 +1,15 @@
-# - file: README
-- file: README.md
-  sections:
-    - file: 01_basics
-    - file: 02_lists_loops
-    - file: 03_Dictionaries
-    - file: 04_library_catalogue
-    - file: 04_caselaw
-    - file: 05_if
-    - file: 06_functions
-    - file: 07_Strings
-    - file: machine_learning
-    - file: 08_exercises
-    - file: 09_library_data_exercises
-    - file: 10_case_law_exercises
-
+format: jb-book
+root: README.md
+chapters:
+- file: 01_basics
+- file: 02_lists_loops
+- file: 03_Dictionaries
+- file: 04_library_catalogue
+- file: 04_caselaw
+- file: 05_if
+- file: 06_functions
+- file: 07_Strings
+- file: machine_learning
+- file: 08_exercises
+- file: 09_library_data_exercises
+- file: 10_case_law_exercises