Apply suggestions from code review

Author: maxulysse

.github/workflows/release-announcements.yml

@@ -17,7 +17,7 @@ jobs:
       - name: get description
         id: get_topics
         run: |
-          echo "description=$(curl -s https://nf-co.re/pipelines.json | jq -r '.remote_workflows[] | select(.full_name == "${{ github.repository }}") | .description' >> $GITHUB_OUTPUT
+          echo "topics=$(curl -s https://nf-co.re/pipelines.json | jq -r '.remote_workflows[] | select(.full_name == "${{ github.repository }}") | .topics[]' | awk '{print "#"$0}' | tr '\n' ' ')" | sed 's/-//g' >> $GITHUB_OUTPUT
 
       - uses: rzr/fediverse-action@master
         with:
@@ -28,7 +28,7 @@ jobs:
           message: |
             Pipeline release! ${{ github.repository }} v${{ github.event.release.tag_name }} - ${{ github.event.release.name }}!
 
-            ${{ steps.get_topics.outputs.description }}
+            ${{ steps.get_description.outputs.description }}
 
             Please see the changelog: ${{ github.event.release.html_url }}