Correct YML whitespace

Author: CiaranOMara

.github/workflows/CompatHelper.yml

@@ -10,7 +10,7 @@ jobs:
   CompatHelper:
     runs-on: ubuntu-latest
     steps:
-           - name: Check if Julia is already available in the PATH
+      - name: Check if Julia is already available in the PATH
         id: julia_in_path
         run: which julia
         continue-on-error: true