Jan/full check 13 (rerun-io#5962)

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### What

Typo in `input` variable, should've been `inputs`

### Checklist
* [ ] I have read and agree to [Contributor
Guide](https://github.com/rerun-io/rerun/blob/main/CONTRIBUTING.md) and
the [Code of
Conduct](https://github.com/rerun-io/rerun/blob/main/CODE_OF_CONDUCT.md)
* [ ] I've included a screenshot or gif (if applicable)
* [ ] I have tested the web demo (if applicable):
* Using examples from latest `main` build:
[rerun.io/viewer](https://rerun.io/viewer/pr/{{pr.number}}?manifest_url=https://app.rerun.io/version/main/examples_manifest.json)
* Using full set of examples from `nightly` build:
[rerun.io/viewer](https://rerun.io/viewer/pr/{{pr.number}}?manifest_url=https://app.rerun.io/version/nightly/examples_manifest.json)
* [ ] The PR title and labels are set such as to maximize their
usefulness for the next release's CHANGELOG
* [ ] If applicable, add a new check to the [release
checklist](https://github.com/rerun-io/rerun/blob/main/tests/python/release_checklist)!

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.github/workflows/on_pr_comment.yml

@@ -75,7 +75,7 @@ jobs:
           now=$(date --utc --iso-8601=seconds)
 
           echo "Dispatching workflow $workflow_name on branch $ref_name"
-          dispatch_workflow $workflow_name $ref_name $input
+          dispatch_workflow $workflow_name $ref_name $inputs
 
           # `gh workflow run` does NOT return the ID.
           # In fact, it returns absolutely nothing: https://github.com/cli/cli/issues/4001