clarify doc for differentiate_with (#767)

* clarify doc for differentiate_with

* Update DifferentiationInterface/src/misc/differentiate_with.jl

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Co-authored-by: Guillaume Dalle <[email protected]>

Author: yebai

DifferentiationInterface/src/misc/differentiate_with.jl

@@ -13,7 +13,7 @@ Moreover, any larger algorithm `alg` that calls `f2` instead of `f` will also be
 
 !!! warning
     `DifferentiateWith` only supports out-of-place functions `y = f(x)` without additional context arguments.
-    It only makes these functions differentiable if the true backend is either [ForwardDiff](https://github.com/JuliaDiff/ForwardDiff.jl) or compatible with [ChainRules](https://github.com/JuliaDiff/ChainRules.jl).
+    It only makes these functions differentiable if the true backend is either [ForwardDiff](https://github.com/JuliaDiff/ForwardDiff.jl) or automatically importing rules from [ChainRules](https://github.com/JuliaDiff/ChainRules.jl) (e.g. [Zygote](https://github.com/FluxML/Zygote.jl)). Some backends are also able to [manually import rules](https://juliadiff.org/ChainRulesCore.jl/stable/#Packages-supporting-importing-rules-from-ChainRules.) from ChainRules.
     For any other true backend, the differentiation behavior is not altered by `DifferentiateWith` (it becomes a transparent wrapper).
 
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