Update update-recent-updates.yml

corrected how to filter out summary (I forgot it's capitalized SUMMARY.md)

Author: l-br1

.github/workflows/update-recent-updates.yml

@@ -17,7 +17,7 @@ jobs:
 
       - name: Get recently updated .md files
         run: |
-          git log --since="7 days ago" --name-only --pretty=format: | grep '\.md' | grep -v -E 'recent-updates.md|summary.md' | sort | uniq > changed.txt
+          git log --since="7 days ago" --name-only --pretty=format: | grep '\.md' | grep -v -i -E 'recent-updates.md|summary.md'| sort | uniq > changed.txt
 
       - name: Generate recent-updates.md
         run: |