correct env file

.github/workflows/doctest.yml

@@ -14,7 +14,7 @@ jobs:
       uses: conda-incubator/setup-miniconda@v2
       with:
         activate-environment: festim-docs
-        environment-file: docs/example-environment.yml
+        environment-file: docs/environment.yml
 
     - name: Doc Tests
       shell: bash -l {0}