Jan/full check 15 (rerun-io#5964)

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### What

A space in JSON inputs was causing `echo` to only print half of it

### 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)!

- [PR Build Summary](https://build.rerun.io/pr/{{ pr.number }})
- [Recent benchmark results](https://build.rerun.io/graphs/crates.html)
- [Wasm size tracking](https://build.rerun.io/graphs/sizes.html)

To run all checks from `main`, comment on the PR with `@rerun-bot
full-check`.

.github/workflows/on_pr_comment.yml

@@ -71,7 +71,7 @@ jobs:
 
           workflow_name='on_push_main.yml'
           ref_name=$(gh pr view ${{ github.event.issue.number }} --json headRefName | jq -r '.headRefName')
-          inputs='{"CONCURRENCY": "pr-${{ github.event.issue.number }}-full-check"}'
+          inputs='{"CONCURRENCY":"pr-${{ github.event.issue.number }}-full-check"}'
           now=$(date --utc --iso-8601=seconds)
 
           echo "Dispatching workflow $workflow_name on branch $ref_name"