Fixed workflow

Author: Sylvain MARIE

.github/workflows/base.yml

@@ -76,7 +76,7 @@ jobs:
         with:
           # Include all versions including pre releases
           # See https://github.com/actions/setup-python/blob/main/docs/advanced-usage.md#specifying-a-python-version
-          python-version: ${{ format('{0}-alpha - {0}', matrix.nox_session.python) }
+          python-version: ${{ format('{0}-alpha - {0}', matrix.nox_session.python) }}
           architecture: x64
           allow-build: info
           cache-build: true