Fix ci.yml

Author: thomasjm

.github/workflows/ci.yml

@@ -19,7 +19,7 @@ jobs:
 
   tests:
     name: ${{ matrix.os }} / Julia ${{ matrix.test_depot }}
-    runs-on: ${matrix.os}
+    runs-on: ${{matrix.os}}
     strategy:
       fail-fast: false
       matrix: