documentation fix regarding reformat

Author: ablaom

docs/src/implementing_a_data_front_end.md

@@ -23,9 +23,10 @@ indices `I` (a colon, `:`, or instance of
 front-end also allows more efficient resampling of data (in user calls
 to `evaluate!`).
 
-After detailing formal requirements for implementing a data front-end,
-we give a [Sample implementation](@ref). A simple [implementation](https://github.com/Evovest/EvoTrees.jl/blob/94b58faf3042009bd609c9a5155a2e95486c2f0e/src/MLJ.jl#L23)
-also appears in the EvoTrees.jl package.
+After detailing formal requirements for implementing a data front-end, we give a [Sample
+implementation](@ref). A simple
+[implementation](https://github.com/JuliaAI/MLJDecisionTreeInterface.jl/blob/7e39bac6bce6d1736e4974f984b6e12801191dd5/src/MLJDecisionTreeInterface.jl#L453)
+also appears in the MLJDecisionTreeInterface.jl package.
 
 Here "user-supplied data" is what the MLJ user supplies when
 constructing a machine, as in `machine(models, args...)`, which