Update mkdocs version and config

mkdocs.yml

@@ -4,13 +4,15 @@ site_description: Django REST framework - Web APIs for Django
 
 repo_url: https://github.com/encode/django-rest-framework
 
-theme_dir: docs_theme
+theme:
+    name: mkdocs
+    custom_dir: docs_theme
 
 markdown_extensions:
  - toc:
     anchorlink: True
 
-pages:
+nav:
  - Home: 'index.md'
  - Tutorial:
     - 'Quickstart': 'tutorial/quickstart.md'

requirements/requirements-documentation.txt

@@ -1,2 +1,2 @@
 # MkDocs to build our documentation.
-mkdocs==0.16.3
+mkdocs==1.0.4

tox.ini

@@ -51,7 +51,7 @@ deps =
         -rrequirements/requirements-testing.txt
 
 [testenv:docs]
-basepython = python2.7
+basepython = python3.7
 skip_install = true
 commands = mkdocs build
 deps =