fix typo

Author: jkotan

.github/workflows/cmake-build.yml

@@ -109,7 +109,7 @@ jobs:
       - name: Add MSVC to PATH
         uses: ilammy/msvc-dev-cmd@v1
         with:
-	  toolset: '14.40'
+            toolset: '14.40'
       - name: Set environment variables
         run: |
             bash .github/workflows/set_env_vars.sh \