Change title of dataframe api doc (#7810)

### What
This is the more common terminology and brings it to one line:

Before:

![image](https://github.com/user-attachments/assets/25028fea-2507-4e36-8008-9c18f4377b53)

After:

![image](https://github.com/user-attachments/assets/195836ed-0384-41e2-a1fd-a3f6dc5cf27e)


### Checklist
* [x] 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)
* [x] I've included a screenshot or gif (if applicable)
* [x] I have tested the web demo (if applicable):
* Using examples from latest `main` build:
[rerun.io/viewer](https://rerun.io/viewer/pr/7810?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/7810?manifest_url=https://app.rerun.io/version/nightly/examples_manifest.json)
* [x] The PR title and labels are set such as to maximize their
usefulness for the next release's CHANGELOG
* [x] If applicable, add a new check to the [release
checklist](https://github.com/rerun-io/rerun/blob/main/tests/python/release_checklist)!
* [x] If have noted any breaking changes to the log API in
`CHANGELOG.md` and the migration guide

- [PR Build Summary](https://build.rerun.io/pr/7810)
- [Recent benchmark results](https://build.rerun.io/graphs/crates.html)
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To run all checks from `main`, comment on the PR with `@rerun-bot
full-check`.

docs/content/howto/dataframe-api.md

@@ -1,5 +1,5 @@
 ---
-title: Get data out from Rerun with code
+title: Get data out of Rerun with code
 order: 1600
 ---