Merge pull request #78 from choldgraf/gha

fixing workflow

Author: choldgraf

.github/workflows/integration.yml

@@ -20,7 +20,9 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install -e .[dev,sphinx]
+        git submodule update --init
+        pip install -e .
+        pip install -r doc/requirements.txt
 
     - name: Build docs
       run: |