Fix typo in Python version in Github Action CI

Author: ldionne

.github/workflows/tox.yaml

@@ -7,7 +7,7 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
-    
+
     strategy:
       matrix:
         python-version: ["3.9", "3.10"]
@@ -17,7 +17,7 @@ jobs:
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v6
       with:
-        python-version: ${{ matrix.python-verison }}
+        python-version: ${{ matrix.python-version }}
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip