spelling mistakes and better .pre-commit hooks

Author: tschm

.github/workflows/main.yml

@@ -30,7 +30,7 @@ jobs:
       - name: Install dependencies
         run: |
           pip install -r requirements.txt
-          pip install pytest ecos black
+          pip install pytest ecos
           # isort black flake8
           # pip install ecos
       - name: Test with pytest
@@ -42,9 +42,9 @@ jobs:
       #- name: Check with isort
       #  run: |
       #    isort --check --diff .
-      - name: Check with black
-        run: |
-          black --check --diff .
+      #- name: Check with black
+      #  run: |
+      #    black --check --diff .
 
       # flake8 is replaced by ruff
       #- name: Check with flake8