Prepare template documents for furo style docs

.readthedocs.yaml

@@ -11,6 +11,7 @@ sphinx:
 formats: []
 python:
   install:
-    - requirements: docs/requirements.txt
     - method: pip
       path: .
+      extra_requirements:
+        - dev

CONTRIBUTING.rst

@@ -1,3 +1,5 @@
+.. _contribute_label:
+
 ============
 Contributing
 ============
@@ -45,23 +47,27 @@ To set up `oemof-solph` for local development:
 
     git clone [email protected]:oemof/oemof-solph.git
 
-3. Create a branch for local development::
+3. Install oemof.solph in editable mode with dev dependencies::
+
+    pip install -e ./path/to/local/clone[dev]
+
+4. Create a branch for local development::
 
     git checkout -b name-of-your-bugfix-or-feature
 
    Now you can make your changes locally.
 
-4. When you're done making changes run all the checks and docs builder with `tox <https://tox.wiki/en/latest/installation.html>`_ one command::
+5. When you're done making changes run all the checks and docs builder with `tox <https://tox.wiki/en/latest/installation.html>`_ one command::
 
     tox
 
-5. Commit your changes and push your branch to GitHub::
+6. Commit your changes and push your branch to GitHub::
 
     git add .
     git commit -m "Your detailed description of your changes."
     git push origin name-of-your-bugfix-or-feature
 
-6. Submit a pull request through the GitHub website.
+7. Submit a pull request through the GitHub website.
 
 Pull Request Guidelines
 -----------------------
@@ -80,7 +86,6 @@ For merging, you should:
 
        It will be slower though ...
 
-
 Tests
 -----
 
@@ -105,7 +110,6 @@ Note, to combine the coverage data from all the tox environments run:
 
             PYTEST_ADDOPTS=--cov-append tox
 
-
 Tips
 ----