Updated main.yml

Author: JKRT

.github/workflows/main.yml

@@ -11,7 +11,7 @@ jobs:
     strategy:
       matrix:
         sys:
-         - { os: windows-latest, shell: 'msys2 {0}' }
+          - { os: windows-latest, shell: 'msys2 {0}' }
           - { os: ubuntu-latest,  shell: bash  }
           - { os: macos-latest,   shell: bash  }
     defaults: