Redirect transformation to main docs (#798)

Author: penelopeysm

docs/make.jl

@@ -20,9 +20,7 @@ makedocs(;
     format=Documenter.HTML(; size_threshold=2^10 * 400),
     modules=[DynamicPPL],
     pages=[
-        "Home" => "index.md",
-        "API" => "api.md",
-        "Internals" => ["internals/varinfo.md", "internals/transformations.md"],
+        "Home" => "index.md", "API" => "api.md", "Internals" => ["internals/varinfo.md"]
     ],
     checkdocs=:exports,
     doctest=false,

docs/src/api.md

@@ -279,7 +279,7 @@ VarInfo
 TypedVarInfo
 ```
 
-One main characteristic of [`VarInfo`](@ref) is that samples are transformed to unconstrained Euclidean space and stored in a linearized form, as described in the [transformation page](internals/transformations.md).
+One main characteristic of [`VarInfo`](@ref) is that samples are transformed to unconstrained Euclidean space and stored in a linearized form, as described in the [main Turing documentation](https://turinglang.org/docs/developers/transforms/dynamicppl/).
 The [Transformations section below](#Transformations) describes the methods used for this.
 In the specific case of `VarInfo`, it keeps track of whether samples have been transformed by setting flags on them, using the following functions.