Fix syntax

Author: FrancescAlted

.github/workflows/build.yml

@@ -9,7 +9,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        python-version: [3.10]
+        python-version: ["3.10"]
 
     steps:
     - uses: actions/checkout@v2