Fixed ShellCheck identifier name

"The workflow is not valid. .github/workflows/shellcheck.yml (Line: 6, Col: 3): The identifier 'profile.d' is invalid. IDs may only contain alphanumeric characters, '_', and '-'. IDs must start with a letter or '_' and and must be less than 100 characters."

.github/workflows/shellcheck.yml

@@ -3,7 +3,7 @@ name: shellcheck
 on: [push, pull_request]
 jobs:
   # TODO: tmout.sh.j2
-  profile.d:
+  profile_d:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout