fix yaml format

Author: madsodgaard

.github/workflows/pull_request.yml

@@ -280,4 +280,4 @@ jobs:
       - name: Run linkage test
         run: ./scripts/run-linkage-test.sh
         env:
-          JAVA_HOME: ${{ env.JAVA_HOME }}
+          JAVA_HOME: ${{ env.JAVA_HOME }}