Use correct secret names (#1524)

### Proposed changes

Use correct secret names
### Checklist

Before creating a PR, run through this checklist and mark each step as
complete.

- [ ] I have read the
[`CONTRIBUTING`](https://github.com/nginxinc/docs/blob/main/CONTRIBUTING.md)
document
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- [ ] My PR is targeting the correct branch:
  - main: content that can be released immediately
- product release branch: content that should be held for a future
release
- [ ] I have updated any relevant supporting documentation
([`README.md`](https://github.com/nginxinc/docs/blob/main/README.md) and
the
[`CHANGELOG.md`](https://github.com/nginxinc/docs/blob/main/CHANGELOG.md))
- [ ] I have followed the [conventional commits
guidelines](https://www.conventionalcommits.org/en/v1.0.0/#summary) for
all commits on my branch

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- [ ] Review the doc for spelling errors.
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Author: nginx-jack

.github/workflows/mend.yml

@@ -35,4 +35,4 @@ jobs:
         env:
           PRODUCT_NAME: nginx_documentation_${{ inputs.branch && inputs.branch || github.ref_name }}
           PROJECT_NAME: nic
-        run: java -jar wss-unified-agent.jar -noConfig true -wss.url ${{ secrets.WSS_URL }} -apiKey ${{ secrets.WSS_NGINX_TOKEN }} -product $PRODUCT_NAME -project $PROJECT_NAME -d .
+        run: java -jar wss-unified-agent.jar -noConfig true -wss.url ${{ secrets.WSS_URL }} -apiKey ${{ secrets.WS_APIKEY_NGINX }} -product ${{ secrets.WS_PRODUCT }} -project ${{ secrets.WS_PROJECT }} -d .