Make trivial formatting changes to "Check Certificates" workflow

No functional change, and neither is necessarily superior, but this is how it is in the "template", and so it must be
here as well.

Author: per1234

.github/workflows/check-certificates.yml

@@ -45,11 +45,13 @@ jobs:
         run: |
           # See: https://docs.github.com/en/actions/reference/workflow-commands-for-github-actions#setting-an-environment-variable
           echo "CERTIFICATE_PATH=${{ runner.temp }}/certificate.p12" >> "$GITHUB_ENV"
+
       - name: Decode certificate
         env:
           CERTIFICATE: ${{ secrets[matrix.certificate.certificate-secret] }}
         run: |
           echo "${{ env.CERTIFICATE }}" | base64 --decode > "${{ env.CERTIFICATE_PATH }}"
+
       - name: Verify certificate
         env:
           CERTIFICATE_PASSWORD: ${{ secrets[matrix.certificate.password-secret] }}
@@ -62,9 +64,9 @@ jobs:
             echo "::error::Verification of ${{ matrix.certificate.identifier }} failed!!!"
             exit 1
           )
+
       - name: Slack notification of certificate verification failure
         if: failure()
-        uses: rtCamp/action-slack-notify@v2
         env:
           SLACK_WEBHOOK: ${{ secrets.TEAM_CREATE_CHANNEL_SLACK_WEBHOOK }}
           SLACK_MESSAGE: |
@@ -73,6 +75,7 @@ jobs:
             :warning::warning::warning::warning:
           SLACK_COLOR: danger
           MSG_MINIMAL: true
+        uses: rtCamp/action-slack-notify@v2
 
       - name: Get days remaining before certificate expiration date
         env:
@@ -98,27 +101,32 @@ jobs:
                 'notAfter=(\K.*)'
             )
           )"
+
           DAYS_BEFORE_EXPIRATION="$((($(date --utc --date="$EXPIRATION_DATE" +%s) - $(date --utc +%s)) / 60 / 60 / 24))"
+
           # Display the expiration information in the log.
           echo "Certificate expiration date: $EXPIRATION_DATE"
           echo "Days remaining before expiration: $DAYS_BEFORE_EXPIRATION"
+
           echo "::set-output name=days::$DAYS_BEFORE_EXPIRATION"
+
       - name: Check if expiration notification period has been reached
         id: check-expiration
         run: |
           if [[ ${{ steps.get-days-before-expiration.outputs.days }} -lt ${{ env.EXPIRATION_WARNING_PERIOD }} ]]; then
             echo "::error::${{ matrix.certificate.identifier }} will expire in ${{ steps.get-days-before-expiration.outputs.days }} days!!!"
             exit 1
           fi
+
       - name: Slack notification of pending certificate expiration
         # Don't send spurious expiration notification if verification fails.
         if: failure() && steps.check-expiration.outcome == 'failure'
-        uses: rtCamp/action-slack-notify@v2
         env:
           SLACK_WEBHOOK: ${{ secrets.TEAM_CREATE_CHANNEL_SLACK_WEBHOOK }}
           SLACK_MESSAGE: |
             :warning::warning::warning::warning:
             WARNING: ${{ github.repository }} ${{ matrix.certificate.identifier }} will expire in ${{ steps.get-days-before-expiration.outputs.days }} days!!!
             :warning::warning::warning::warning:
           SLACK_COLOR: danger
-          MSG_MINIMAL: true
+          MSG_MINIMAL: true
+        uses: rtCamp/action-slack-notify@v2