docs: rename "Trigger Portainer redeploy" step to generic "Trigger redeploy webhook"

The step uses a generic DOCKER_REDEPLOY_WEBHOOK_URL secret and is not
Portainer-specific — any redeploy webhook endpoint works. Rename the step
label, echo line, and warning to reflect the generic nature.

gitea-python-ci-cd.md

@@ -728,14 +728,14 @@ CMD ["uvicorn", "your_package.main:app", "--host", "0.0.0.0", "--port", "8080"]
   if: steps.docker-login.outcome == 'success'
   run: docker push "$REGISTRY" --all-tags
 
-- name: Trigger Portainer redeploy
+- name: Trigger redeploy webhook
   if: steps.docker-login.outcome == 'success'
   continue-on-error: true  # Optional — webhook may not be configured
   run: |
     if [ -n "${{ secrets.DOCKER_REDEPLOY_WEBHOOK_URL }}" ]; then
-      echo "Triggering Portainer redeploy..."
+      echo "Triggering redeploy webhook..."
       curl -sf -X POST "${{ secrets.DOCKER_REDEPLOY_WEBHOOK_URL }}" \
-        --max-time 30 || echo "::warning::Portainer webhook failed"
+        --max-time 30 || echo "::warning::Redeploy webhook failed"
     else
       echo "DOCKER_REDEPLOY_WEBHOOK_URL not set — skipping auto-deploy"
     fi