add sphinx-tojupyter

Author: mmcky

.github/workflows/scheduled.yml

@@ -23,7 +23,7 @@ jobs:
         shell: bash -l {0}
         run: |
           conda install anaconda
-          pip install jupyter-book sphinx-multitoc-numbering quantecon-book-theme sphinxext-rediraffe
+          pip install jupyter-book sphinx-multitoc-numbering quantecon-book-theme sphinxext-rediraffe sphinx_tojupyter
       - name: Build Lectures (+ Execution Checks) [Linux, OS X]
         shell: bash -l {0}
         run: jb build lectures --path-output=./
@@ -47,7 +47,7 @@ jobs:
         run: |
           conda install anaconda
           pip install jupyter-book
-          pip install jupyter-book sphinx-multitoc-numbering quantecon-book-theme sphinxext-rediraffe
+          pip install jupyter-book sphinx-multitoc-numbering quantecon-book-theme sphinxext-rediraffe sphinx_tojupyter
       - name: Build Lectures (+ Execution Checks) [Windows]
         shell: powershell
         run: jb build lectures --path-output=./