Update docs/src/interface/Custom Builders.md

Co-authored-by: Anthony Blaom, PhD <[email protected]>

docs/src/interface/Custom Builders.md

@@ -26,7 +26,7 @@ Note here that `n_in` and `n_out` depend on the size of the data (see
 [Table 1](@ref Models).
 
 For a concrete image classification example, see
-[examples/mnist](examples/mnist).
+the [Image Classification Example](@ref).
 
 More generally, defining a new builder means defining a new struct
 sub-typing `MLJFlux.Builder` and defining a new `MLJFlux.build` method