Fix ml model link (viamrobotics#2631)

docs/ml/_index.md

@@ -15,7 +15,7 @@ menuindent: true
 
 {{<imgproc src="/ml/training.png" class="alignright" resize="400x" declaredimensions=true alt="ML training">}}
 
-Viam includes a built-in [machine learning (ML) model service](/ml/) which provides your machine with the ability to learn from data and adjust its behavior based on insights gathered from that data.
+Viam includes a built-in machine learning (ML) model service which provides your machine with the ability to learn from data and adjust its behavior based on insights gathered from that data.
 Common use cases include:
 
 - Object detection and classification which enable machines to detect people, animals, plants, or other objects with bounding boxes, and to perform actions when they are detected.