fix: Update indexnow.yml

Signed-off-by: Martin Stühmer <me@samtrion.net>

Author: samtrion

.github/workflows/indexnow.yml

@@ -7,13 +7,13 @@ jobs:
   check-and-submit:
     runs-on: ubuntu-latest
     steps:
-
-        
-      - name: indexnow-action
+ 
+      - id: indexnow
+        name: Report Updates to IndexNow
         uses: bojieyang/indexnow-action@v2
         with:
           sitemap-location: 'https://daily-devops.net/sitemap.xml'
           key: ${{ secrets.INDEXNOW_KEY }}
           key-location: 'https://daily-devops.net/indexnow.txt'
-          since-unit: 'year'
-          failure-strategy: 'error'
+          since-unit: 'month'
+          failure-strategy: 'error'