Update RaycastResult.yaml

Author: lack-of-gravity-jack

content/en-us/reference/engine/datatypes/RaycastResult.yaml

@@ -25,7 +25,7 @@ properties:
     tags: []
     deprecation_message: ''
   - name: RaycastResult.Instance
-    type: Instance
+    type: BasePart
     summary: |
       The `Class.BasePart` or `Class.Terrain` cell that the ray intersected.
     description: |
@@ -50,7 +50,7 @@ properties:
       The position of the intersection between the ray and the part.
     description: |
       The world space point at which the intersection occurred, usually a point
-      directly on the surface of the instance.
+      directly on the surface of the `Class.BasePart`.
     code_samples: []
     tags: []
     deprecation_message: ''