Fix build errors and missing dependencies (#438)

Author: Shashwati

DISCOVER/_toc.yml

@@ -19,5 +19,5 @@ chapters:
 - file: 13_inclusive-checklist
   title: Inclusivity Checklist
 - file: 14_how_to_contribute
-- file: 15_OA_Protocols.md
+- file: 15_QA_Protocols.md
 - file: _tags/tagsindex

requirements.txt

@@ -1,2 +1,11 @@
 jupyter-book
-sphinx-tags
+sphinx-tags
+sphinx-togglebutton
+sphinx-copybutton
+sphinx-external-toc
+sphinx-design
+sphinx-book-theme
+sphinx-multitoc-numbering
+sphinx-jupyterbook-latex
+myst-parser
+linkify-it-py