fix docs workflow to use requests lib

Author: haileyajohnson

.github/workflows/docs.yml

@@ -24,7 +24,7 @@ jobs:
     - name: Install MkDocs and dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install mkdocs mkdocs-macros-plugin
+        pip install mkdocs mkdocs-macros-plugin requests
 
     - name: Build docs
       run: mkdocs build