FIX: review linkchecker warnings (#149)

* FIX: review linkchecker warnings

* put ignore on baidu links returning 403

Author: mmcky

lectures/_config.yml

@@ -39,8 +39,10 @@ sphinx:
   config:
     bibtex_reference_style: author_year
     # false-positive links
-    linkcheck_ignore: ['https://doi.org/https://doi.org/10.2307/1235116', 'https://unctad.org/publication/commodities-and-development-report-2019',
-    'https://math.stackexchange.com/*', 'https://stackoverflow.com/*']
+    linkcheck_ignore: [
+      'https://doi.org/https://doi.org/10.2307/1235116', 
+      'https://unctad.org/publication/commodities-and-development-report-2019',
+      'https://math.stackexchange.com/*', 'https://stackoverflow.com/*', 'https://baike.baidu.com/*']
     # myst-nb config
     nb_render_image_options:
       width: 80%
@@ -126,4 +128,9 @@ sphinx:
           language: python3
           name: python3
         file_extension: ".py"
-    tojupyter_images_markdown: true
+    tojupyter_images_markdown: true
+    nb_mime_priority_overrides: [
+       # Link Checker
+       ['linkcheck', 'text/plain', 10],
+       ['linkcheck', 'text/html', 20],
+     ]