**What this PR does / why we need it**:
Fixes typos and grammar. Most of them were occurrences of `it's` that
should be `its`.
**Which issue(s) this PR fixes**:
None
**Special notes for your reviewer**:
**Checklist**
- [x] Reviewed the
[`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md)
guide (**required**)
- [ ] Documentation added
- [ ] Tests updated
- [ ] `CHANGELOG.md` updated
- [ ] Changes that require user attention or interaction to upgrade are
documented in `docs/sources/upgrading/_index.md`
Signed-off-by: Erik Sjölund <erik.sjolund@gmail.com>
**Which issue(s) this PR fixes**:
Fixes#8717
**Special notes for your reviewer**:
Part of the Database products table of contents alignment project.
Moves alerting and recording rules from Rules to new Alert heading in
TOC.
Updates front matter for the topic.
Fixes links broken by the move.