connect missing doc link to jax lecture

Author: mmcky

lectures/_config.yml

@@ -15,7 +15,7 @@ latex:
      targetname: quantecon-python-programming.tex
 
 sphinx:
-  extra_extensions: [sphinx_multitoc_numbering, sphinxext.rediraffe, sphinx_tojupyter, sphinx_exercise, sphinx_togglebutton]
+  extra_extensions: [sphinx_multitoc_numbering, sphinxext.rediraffe, sphinx_tojupyter, sphinx_exercise, sphinx_togglebutton, sphinx.ext.intersphinx]
   config:
     # bibtex_reference_style: author_year #TODO: enable if bibtex bibliography is used in series
     # false-positive links
@@ -52,6 +52,10 @@ sphinx:
         notebook_interface        : classic  # The interface interactive links will activate ["classic", "jupyterlab"]
         colab_url                 : https://colab.research.google.com
         thebe                     : false  # Add a thebe button to pages (requires the repository to run on Binder)
+    intersphinx_mapping: 
+      jax: 
+        - "https://jax.quantecon.org/"
+        - null
     mathjax_path: https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js
     rediraffe_redirects:
       index_toc.md: intro.md

lectures/jax_intro.md

@@ -493,7 +493,7 @@ ax.legend(loc='upper center')
 plt.show()
 ```
 
-We defer further exploration of automatic differentiation with JAX until {doc}`autodiff`.
+We defer further exploration of automatic differentiation with JAX until {doc}`jax:autodiff`.
 
 ## Writing vectorized code