[docs] Document driver mode (#1890)

## Description

Adds documentation for driver mode because it currently isn't
documented.

Closes #1824

## Meta

Merge checklist:
- [x] Pull Request title is [short, imperative
summary](https://cbea.ms/git-commit/) of proposed changes
- [x] The description documents the _what_ and _why_
- [x] If this PR changes behavior or adds a feature, user documentation
is updated
- [x] If this PR touches photon-serde, all messages have been
regenerated and hashes have not changed unexpectedly
- [x] If this PR touches configuration, this is backwards compatible
with settings back to v2024.3.1
- [x] If this PR touches pipeline settings or anything related to data
exchange, the frontend typing is updated
- [x] If this PR addresses a bug, a regression test for it is added

---------

Co-authored-by: Gold856 <117957790+Gold856@users.noreply.github.com>
Co-authored-by: Sam Freund <techguy763@gmail.com>

docs/source/docs/pipelines/about-pipelines.md

@@ -26,6 +26,10 @@ This pipeline type is based on detecting objects using a neural network. The obj
 This pipeline type is only supported on the Orange Pi 5/5+ coprocessors due to its Neural Processing Unit used by PhotonVision to support running ML-based object detection.
 :::
 
+### Driver Mode
+
+Driver Mode is a type of pipeline that doesn't run any vision processing, intended for human viewing. For more information about Driver Mode, see the {ref}`Driver Mode documentation<docs/driver-mode/index:Driver Mode>`.
+
 ### Colored Shape
 
 This pipeline type is based on detecting different shapes like circles, triangles, quadrilaterals, or a polygon. An example usage would be detecting yellow PowerCells from the 2020 FRC game. You can read more about the specific settings available in the contours page.