ordering latex build render priorities (#247)

Author: AakashGfude

lectures/_config.yml

@@ -55,6 +55,13 @@ sphinx:
       - "image/jpeg"
       - "text/markdown"
       - "text/plain"
+      latex:
+      - "text/latex"
+      - "application/pdf"
+      - "image/png"
+      - "image/jpeg"
+      - "text/markdown"
+      - "text/plain"
     html_favicon: _static/lectures-favicon.ico
     html_theme: quantecon_book_theme
     html_static_path: ['_static']