chore(docs): replace promtail reference with vector in prerequisites (#…

…1098)

## Description

There was a lingering reference to promtail in the website docs on the
prerequisites page. Replaced promtail with vector.

## Related Issue

## Type of change

- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [x] Other (security config, docs update, etc)

## Checklist before merging

- [x] Test, docs, adr added or updated as needed
- [x] [Contributor
Guide](https://github.com/defenseunicorns/uds-template-capability/blob/main/CONTRIBUTING.md)
followed

docs/reference/UDS Core/prerequisites.md

@@ -70,9 +70,10 @@ In addition, to run Istio ingress gateways (part of Core) you will need to ensur
 
 NeuVector historically has functioned best when the host is using cgroup v2. Cgroup v2 is enabled by default on many modern Linux distributions, but you may need to enable it depending on your operating system. Enabling this tends to be OS specific, so you will need to evaluate this for your specific hosts. 
 
-#### Promtail
 
-In order to ensure that Promtail is able to scrape the necessary logs concurrently you may need to adjust some kernel parameters for your hosts. The below is a script that can be used to adjust these parameters to suitable values and ensure they are persisted across reboots. Ideally this script is used as part of an image build or cloud-init process on each node.
+#### Vector
+
+In order to ensure that Vector is able to scrape the necessary logs concurrently you may need to adjust some kernel parameters for your hosts. The below is a script that can be used to adjust these parameters to suitable values and ensure they are persisted across reboots. Ideally this script is used as part of an image build or cloud-init process on each node.
 
 ```console
 declare -A sysctl_settings