reference answer modes

Author: f-wright

docs/docs/answer-modes/answer-modes.md

@@ -6,6 +6,5 @@ Groundlight offers several detector modalities to suit different computer vision
 - **[Binary Detectors](1-binary-detectors.md)**: Learn how to create detectors that answer yes/no questions about images.
 - **[Multiple Choice (Choose One) Detectors](2-multi-choice-detectors.md)**: Create detectors that select one answer from a predefined list of options.
 - **[Count Detectors](3-counting-detectors.md)**: Use detectors to count the number of objects present in an image - and return bounding boxes around the counted objects.
-<!-- 4. [Text Recognition Detectors](4-text-recognition-detectors.md) -->
-
-<!-- TODO: object detection modes -->
+- **[Bounding Box Detectors](4-bounding-box-detectors.md)**: Detectors to identify and localize objects in an image.
+<!-- 5. [Text Recognition Detectors](4-text-recognition-detectors.md) -->