Remove extra comma

Author: JamesParrott

.github/workflows/build.yml

@@ -15,7 +15,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["2.7.18", , "3.5.10", "3.6.15", "3.7.17", "3.8.18", "3.9.18"]
+        python-version: ["2.7.18", "3.5.10", "3.6.15", "3.7.17", "3.8.18", "3.9.18"]
 
     runs-on: ubuntu-latest
     container: