move docs requirements back to local-docs-build

Author: dojutsu-user

requirements/docs.txt

@@ -11,3 +11,13 @@ Pygments==2.3.1
 
 mkdocs==1.0.4
 Markdown==3.0.1
+
+# Docs
+sphinxcontrib-httpdomain==1.7.0
+sphinx-prompt==1.0.0
+
+# commonmark 0.5.5 is the latest version compatible with our docs, the
+# newer ones make `tox -e docs` to fail
+commonmark==0.5.5
+
+recommonmark==0.4.0