Updated pip install from classical to dev.

Author: LouisTier

.github/workflows/docs.yml

@@ -18,7 +18,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install -e .
+          pip install -e '.[dev]'
           pip install sphinx sphinx-rtd-theme sphinx-autodoc-typehints
           
       - name: Build docs