Enable more tests and add graphviz extra to docs

Author: codingjoe

.github/workflows/ci.yml

@@ -54,7 +54,7 @@ jobs:
             extras: "test,reversion"
           - python-version: "3.x"
             django-version: "5.2"
-            extras: "test,graphviz"
+            extras: "test,graphviz,dramatiq"
     steps:
       - uses: actions/checkout@v5
       - uses: actions/setup-python@v6

docs/tutorial/index.rst

@@ -12,7 +12,7 @@ the PyPi package…
 
 .. code:: shell
 
-    python3 -m pip install "joeflow[reversion,dramatiq,celery]"
+    python3 -m pip install "joeflow[reversion,dramatiq,celery,graphviz]"
 
 …and add ``joeflow`` to the ``INSTALLED_APP`` setting. You will also need to have
 celery setup.